lang stringclasses 4
values | desc stringlengths 2 8.98k | code stringlengths 7 36.2k | title stringlengths 12 162 |
|---|---|---|---|
JS | I have a text and block in an animation of an SVG element.Here in my example i simplified everything . I want to have one initial animation and afterwards a hover animation on the block element . The initial animation is fine as it is . ( use chrome to have equals measurements ) . But after the initial animation the us... | .text { font-weight : bold ; opacity : 0 ; transition : all .8s ; animation : showText 3s ease-in-out forwards ; animation-delay : 2s ; } .text : hover { opacity : 1 ; transition : all .8s ; } .block { top : 50px ; left : 50px ; position : absolute ; height : 20px ; width : 20px ; background-color : red ; transition : ... | How to apply a hover effect on an element which has already been handled by an forward animation ? |
JS | It is the predominant opinion that built-in Javascript prototypes should not be extended ( or altered in any way ) : Does this rule also apply to ES2015 symbols ? Since symbol is a mix of string ( primitive , immutable ) and object ( identity ) there can be no object property naming conflicts by definition.Normal objec... | Array.prototype.empty = function ( ) { return this.length === 0 ; } // do n't try that const empty = Symbol ( `` empty '' ) ; Array.prototype [ empty ] = function empty ( ) { return this.length === 0 ; } Object.getOwnPropertyNames ( Array.prototype ) .indexOf ( `` empty '' ) ; // -1 | Should the extension of built-in Javascript prototypes through symbols also be avoided ? |
JS | These 2 expressions do the same thing but which one is safer or even more efficient ? ( Both a getting a cell 's , selectedCell , parent row and indexing into a column on that parent row . ) | var indexedCellValue = selectedCell.srcElement.parentElement.cells [ index ] .innerText ; var indexedCellValue = $ ( selectedCell.srcElement ) .parent ( 'tr ' ) .get ( 0 ) .cells [ index ] .innerText ; | Are JQuery selectors safer than DOM properties ? |
JS | I have an object with conditional keys . I.e . : I 'm new to TS and I expected this to work : However , I 'm passing this to fetch and the type definition for fetch 's headers is { [ key : string ] : string } . I 'm getting : The only way I could get this to work is type RequestHeaders = { [ key : string ] : string } ;... | const headers : RequestHeaders = { } ; if ( ... ) { headers.foo = 'foo ' ; } if ( ... ) { headers.bar = 'bar ' ; } type RequestHeaders = { foo ? : string , bar ? : string , } ; Type 'RequestHeaders ' is not assignable to type ' { [ key : string ] : string ; } ' . Property 'foo ' is incompatible with index signature . T... | TypeScript optional object key not behaving as expected |
JS | I have four files.index.php `` the main page '' with search function that use MySQL databse . and I call the databasethrow javascript , client side.fetch.php `` contain MySQL connections info's.bridge.php to cover fetch file , and I 'm using php code to makethe connection..htaccess file to block any direct access to th... | < script > $ ( document ) .ready ( function ( ) { function load_data ( query ) { $ .ajax ( { url : '' bridge.php '' , method : '' post '' , data : { query : query } , success : function ( data ) { $ ( ' # result ' ) .html ( data ) ; } } ) ; } < ? phpinclude 'fetch.php ' ; ? > < Files ~ `` fetch.php '' > Order deny , al... | How do I make a bridge code between my javascript file and php file to protect MySQL info 's ? |
JS | I want to read Data via node red modbus node from a data source . The range is -20000 to 20000 , but the node can not handle negative numbers , so I had to convert them to binary numbers ( DWORD ) , split them in the lower and higher word and convert these words back to integers.For visualisation I want to use the dash... | var lowfunction dec2bin ( dec ) { return ( dec > > > 0 ) .toString ( 2 ) ; } var a = msg.payloadif ( a > = 0 ) { a = dec2bin ( a ) ; a = parseInt ( a,2 ) ; } else { a = dec2bin ( a ) ; a = a.substr ( 16 ) ; a = parseInt ( a,2 ) ; } low = { payload : a } ; return low ; | How can I convert negative binary number to int ? |
JS | My document looks like this : Basically the background is one full-screen , transparent div . There are couple problems ... if I just create the background div and do n't apply any z-index to it , it ends up being on top of everything , and I can not click on the box . If I set the z-index of the background div to be b... | var x = document.getElementById ( `` bg '' ) ; x.addEventListener ( `` click '' , reset , false ) ; function reset ( ) { alert ( `` reset was clicked '' ) ; } | How to respond to a click outside a certain area ? |
JS | When I only perform the next steps in my algorithm if various conditions are met I express it this way : When I only perform the next steps based on the fulfillment of a promise I can express it like this : How can I express in idiomatic JavaScript when condition sc1 is a just a regular old synchronous expression but c... | if ( sc1 || sc2 ) { do ( ) ; various ( ) ; things ( ) ; } asyncCheck ( ) .then ( ac1 = > { if ( ac1 ) { do ( ) ; various ( ) ; things ( ) ; } } if ( sc1 ) { do ( ) ; various ( ) ; things ( ) ; } else { asyncCheck ( ) .then ( ac2 = > { if ( ac2 ) { do ( ) ; various ( ) ; things ( ) ; } } } | Are there idiomatic ways to express `` if ( c1 || c2 ) '' in JavaScript when one of the conditions is a promise and the other is not ? |
JS | I need to store an object like the one I the example below in localstorage . I need to be able to retrieve this object and edit it , then save it back into localStorage for next time.I tried this but it said 'undefined ' : What can I do to fix it ? Solved | var data = { lastEdit : '' September '' , expires : '' December '' , records : [ { arrives : `` 12:45 '' , departs : `` 12:51 '' } , { arrives : `` 13:03 '' , departs : `` 13:04 '' } ] } ; localStorage.setItem ( `` dataStore1 '' , data ) ; var output = localStorage.getItem ( `` dataStore1 '' ) ; | Why is n't localStorage accepting my object ? |
JS | According to my research , the order of keys in a for..in loop should be undefined/unreliable – but , if left undisturbed , should be in insertion order – but it 's not : I fetch this data object from the database , ordered by name : The keys get ordered numerically ( in all of Chrome , Firefox , and Edge ) . Why ? And... | var travel = { ' 2 ' : { name : 'bus ' , price : 10 } , ' 3 ' : { name : 'foot ' , price : 0 } , ' 1 ' : { name : 'taxi ' , price : 100 } } for ( way in travel ) console.log ( travel [ way ] .name ) // = > taxi , bus , foot | Iteration order of for.in & ndash ; not by insertion ( any more ? ) |
JS | i do n't know why this program is not working on my computer while other PC doesso when i want to running this program it gives one error is given below , so try to hep for fix it ... index.js posts.jsprofile.jsbut it shows the error something like this in the microsogt edge ... it shows error in mozilla firefox like t... | import React , { Component } from 'react ' ; import ReactDOM from 'react-dom ' ; import { BrowserRouter , Route } from 'react-router-dom ' ; import PropTypes from 'prop-types ' ; import Posts from './components/posts ' ; import Profile from './components/profile ' ; class App extends Component { render ( ) { return < d... | reacter router dom is not working |
JS | See belowWhy does Closure raise an error only when using call and not apply ? Is there a way I can made closure type-check the parameters even when I 'm using apply ? | /** * @ param { string } a * @ param { string } b */var f = function ( a , b ) { // ... } /** * @ param { string } a * @ param { boolean } c */var h = function ( a , c ) { f.apply ( this , arguments ) ; // no compile error f.apply ( this , [ a , c ] ) ; // no compile error f.call ( this , a , c ) ; // compile error : d... | Why does not Closure type-check the parameters when using function.apply ? |
JS | In JavaScript , 0 % 100 is 0 , but in Elm , the result of the same operation is this.I have just thought remainderBy function better returns Maybe Int like below.Does Elm have any reason why remainderBy returns NaN ? | > remainderBy 0 100NaN : Int > remainderBy 0 100Nothing : Maybe Int > remainderBy 6 3Just 2 : Maybe Int | Why does `` remainderBy 0 100 '' in Elm 0.19 return NaN , not Maybe Int ? |
JS | I have good understanding how javascript as well as jQuery can be used in the HTML file but logically one question is arisen.When we want to embed javascript into HTML file , generally ( not every time ) we write this simple code in head part.And when we want to embed jQuery at that time the same peace of codeHow can w... | < script type= '' text/javascript '' > ... < /script > < script type= '' text/javascript '' > ... < /script > | Logic Behind the Use of jQuery ? |
JS | I wonder the title is right or not , anyway what I wonder is how can do thing like thisHow can I get the results above ? ? I 've been trying for two days to find the answer in the book and on the internet , but I could n't find it.please help ... . Thanks in advance . | const items = [ a1 , a2 , a3 , a4 , a5 , a6 , a7 , a8 , a9 .. and so on ] const flexbox1 = [ ] ; const flexbox2 = [ ] ; const flexbox3 = [ ] ; const flexbox4 = [ ] ; for ( const item in items ) { // what I wonder is this part . } == > result : const flexbox1 = [ a1 , a5 , a9 , a13 .. and so on ] ; const flexbox2 = [ a2... | how to put items in an array sequentially ? ( javascript ) |
JS | I 'm updating mootools from 1.3.2 to 1.4.1.I saw a strange change . From thisto thishow the `` > > > '' operator , used in that way , can improve performance ? What do you think about it ? | for ( var i = 0 , l = this.length ; i < l ; i++ ) { ... . for ( var i = 0 , l = this.length > > > 0 ; i < l ; i++ ) { | For loop improved with `` > > > '' operator ? |
JS | I have got a page in my frontend with different buttons , all buttons , on their own , work perfectly , but if I click the button that opens an extension in the chrome web store and click on another button afterwards , the page does n't open.Here is an exmaple of what I am talking about . If you click the buttons witho... | < button id= '' button1 '' onclick= '' window.open ( 'https : //www.facebook.com/ ' , 'popup ' , 'width=700 , height=300 ' ) ; '' > < strong > CONTINUAR < /strong > < /button > < br > < button id= '' button2 '' onclick= '' window.open ( 'https : //www.google.com/ ' , 'popup ' , 'width=700 , height=300 ' ) ; '' > < stro... | Why ca n't I open a tab with a html-button while being on the chrome web store ? |
JS | I am a newbie to JavaScript , but I am familiar with Python . I am trying to figure out the differences between the Dictionary in Python and the Object in JS.As far as I know , the key in a dictionary in Python needs to be defined in advance , but it could be undefined in an object in JS . However , I am confused about... | var n = 'name ' ; var n2 = n ; var person = { n : 'mike ' } ; person.n # 'mike'person [ ' n ' ] # 'mike'person [ n2 ] # undefinedperson.n2 # undefinedperson [ 'name ' ] # undefinedperson . 'name ' # undefined n = 'name'n2 = nperson = { n : 'mike ' } person [ n ] # 'mike'person [ n2 ] # 'mike'person [ 'name ' ] # 'mike ... | I am so confused about Object in JavaScript |
JS | I have this structure of text : I need to create JS objects : That 's not a problem.The problem is that I want to extract values via Regex split via positive lookahead : Split via the first time you see that next character is a letterWhat have i tried : This is working fine : But If I have 2 words or more : The result ... | 1.6.1 Members ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 121.6.2 Accessibility ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 131.6.3 Type parameters ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 131.6.4 The T generic... | split line via regex in javascript ? |
JS | I 've read various `` there is no truly private data in Python instances '' posts , but we 're all aware of using closures in Perl and JavaScript to effectively achieve private data . So why not in Python ? For example : Now we do : What can you do to the instance thing to get read access to the original string ( ignor... | import codecsclass Secret : def __private ( ) : secret_data = None def __init__ ( self , string ) : nonlocal secret_data if secret_data is None : secret_data = string def getSecret ( self ) : return codecs.encode ( secret_data , 'rot_13 ' ) return __init__ , getSecret __init__ , getSecret = __private ( ) > > > thing = ... | Python private instance data revisited |
JS | Prepending that a solution only needs to work in the latest versions of Chrome , Firefox , and Safari as a bonus.-I am trying to use an associative array for a large data set with knockout . My first try made it a true associative array : but knockout was not happy with looping over that . So I tried a cheating way , h... | [ 1 : { Object } , 3 : { Object } , ... , n : { Object } ] [ undefined , { Object } , undefined , { Object } , ... , { Object } ] $ .each ( data , function ( index , item ) { self.myArray.splice ( item.PKID , 0 , new Object ( item ) ) ; } < ! -- ko foreach : { data : myArray ( ) , afterRender : setInitialTileColor } --... | Is there a way to map a value in an object to the index of an array in javascript ? |
JS | I am responding to mouseenter events on an SVG path element by making the path the last child in its parent . This is so it appears on top of other elements ( no z-index on SVG stuff unfortunately ) . The problem is that on Firefox this causes a mouseleave event to fire . This works fine on Chrome.Does anyone know a wo... | // on mousenternode.parentNode.appendChild ( node ) // this triggers a mouseleave .. if i do n't move the node it works | How to stop Firefox firing mouseleave when DOM node is moved in the DOM ? |
JS | Preface : I have a demo of the problem on my personal site ( I hope this is ok . If not , I can try to set it up on jsfiddle ) . I 'm intending this question to be a little fun , while also trying to understand the time functions take in javascript.I 'm incrementing the value of progress bars on a timeout . Ideally ( i... | function setProgress ( bar , myPer ) { bar.progressbar ( { value : myPer } ) .children ( '.ui-progressbar-value ' ) .html ( myPer.toPrecision ( 3 ) + ' % ' ) .attr ( 'align ' , 'center ' ) ; myPer++ ; if ( myPer == 100 ) { myPer = 0 ; } } function moveProgress ( bar , myPer , inc , delay ) { setProgress ( bar , myPer )... | How can I make my setTimout functions run at the same speed ? |
JS | On some JS code on some sites I see Javascript code such as this : I mean , this is not a jQuery plugin code such as this : Then , what is it ? and what is the resulting JS object ? | SomeName.init = ( function ( ) { // some stuff } ) ( ) ; ( function ( $ ) { $ .fn.myPlugin = function ( ) { // Do your awesome plugin stuff here } ; } ) ( jQuery ) ; | What is this code in Javascript ? |
JS | I have an issue where I have a div class= '' tasteTheRainbow '' and inside are img tags . One tag in particular is a png class named .gA3.Now tasteTheRainbow already has a css background url but when you tap or click the .gA3 I want the background url to change.I have tried many other stackoverflow posts and found no s... | < div class= '' tasteTheRainbow '' > < div class= '' greenArrow '' > < img class= '' gA1 '' src= '' assets/arrows/down.png '' / > < img class= '' gA2 '' src= '' assets/arrows/in.png '' / > < img class= '' gA3 '' src= '' assets/arrows/left.png '' / > < img class= '' gA4 '' src= '' assets/arrows/out.png '' / > < img clas... | css and/or javascript change background on clicking image |
JS | So my character div changes its background image when the player presses x which then kills the enemy if the character is touching the enemy . This image switch is to do a mock animation of swinging a sword.I used set timeout to delay switching the background image back to its original state . This works.HOWEVER theirs... | function pressOn ( e ) { e.preventDefault ( ) ; let tempKey = ( e.key == `` `` ) ? `` space '' : e.key ; keys [ tempKey ] = true ; if ( keys [ ' x ' ] & & player.swing == false ) { player.plane.style.backgroundImage ='url ( guts2.png ) ' ; setTimeout ( function ( ) { player.swing = true ; } , 300 ) ; } } function playG... | spam asynchronous callbacks breaking my setTimeout delay |
JS | I developed a website for my graduation however it still only one thing I have do . What I want is when the script is installed on a website I want to send the name of the website who has installed my script , also whenever there is an error I want to send it to my website so for example : This website installed my scr... | www.security-dz.com/myscript www.getlog.com/mylogs.php | Send log errors to a file |
JS | If metacharacter ? matches the preceding element zero or one time , thenwhyreturns [ `` a '' ] , butreturns [ `` '' ] ? | `` ab '' .match ( /a ? / ) `` ab '' .match ( /b ? / ) | why only first letter is returned by match function ? |
JS | Consider the below code , I am trying to understand the behaviour between asyncFunction1 and asyncFunction2 execution , the asyncFunction1 takes 2 seconds for each await ( total 6 ) when not assigned to a variable , but asyncFunction2resolves all the 3 promises in total 2 seconds when assigned to a variable , what happ... | // Function which returns a promise and resolves in 2 secondsconst promiseFunction = ( ) = > { return new Promise ( ( resolve , reject ) = > { setTimeout ( ( ) = > { resolve ( 'resolved ' ) ; } , 2000 ) ; } ) ; } ; // Asynchronous function 1const asyncFunction1 = async ( ) = > { console.log ( await promiseFunction ( ) ... | Awaiting promises which is assigned to a variable |
JS | If in Chrome console I run proper JSON : I get : If however I run e.g . : It dose n't complain . Also running below is fine : I thought that proper JSON must have properties names wrapped in quotation marks so why is this happening ? Is JS object notation not proper JSON ? | { `` aaa '' : '' bbb '' } SyntaxError : Unexpected token : { aaa : '' bbb '' } aaa= { `` aaa '' : '' bbb '' } | Is JavaScript Object notation proper JSON ? |
JS | I 'm trying to store a directory tree in a mongoDB . Here 's my schema : I want to changes this so that the children get nested inside the parents . i.e . : Here 's the function I 'm using to try to accomplish this : I call the function like this : My console returns this : Why is children undefined ? Here 's a live de... | { `` _id '' : ObjectId ( `` 541ba7f156d876d3f787bc33 '' ) , `` name '' : `` file_1.mp3 '' , `` length '' : 136.6 , `` kind '' : `` audio '' , `` parent '' : null } { `` _id '' : ObjectId ( `` 541ba7f156d876d3f787bc34 '' ) , `` name '' : `` file_2.mp3 '' , `` length '' : 132.0 , `` kind '' : `` audio '' , `` parent '' :... | Build javascript tree based on parent attribute in array of elements |
JS | I have added a form in my app . When I send the form data to my local server I create an image with a title . When I attach images I should be using input type= '' file '' . Also , I should use FormData in my app.But when I write my component I have an error 'formElem ' is not defined in the two lines commented in the ... | const AddImage = ( props ) = > { formElem.onsubmit = async ( e ) = > { // ERROR THERE e.preventDefault ( ) ; try { const response = await api ( ` $ { imageRoute } ` , { method : 'POST ' , body : new FormData ( formElem ) , // ERROR THERE } ) ; } catch ( e ) { console.error ( e ) ; } } ; return ( < div className= '' for... | How to correctly write FormData in my React app ? |
JS | I have a task model which is related to the user and project models.When I create/update a task , I need to do an update in the view async , not only for the task change/addition , but to the project and user info ( because some of that data might change too ) .I have this in the controller : And my tasks/create.js.cof... | def create @ task = Task.new ( params [ : task ] ) @ project = Project.find ( params [ : project_id ] ) respond_to do |format| if @ task.save format.html { redirect_to @ task , notice : 'Task was successfully created . ' } format.json { render json : @ task , status : : created , location : @ task } else format.html { ... | Pattern to render multiple coffee |
JS | I am using JQuery , and I would like to know if the remove ( ) method cleans its contents of event handlers . For instance : At this point is there an event handler still hanging out in memory ? If so , is there a way to clear the element object of event handlers before removing it from the DOM ? | function someFunction ( ) { var element = $ ( ' < div > < /div > ' ) ; element.click ( function ( ) { alert ( 'bar ' ) ; } ) ; $ ( 'body ' ) .append ( element ) ; element.remove ( ) ; } | Is it necessary to unbind events from elements removed from a document |
JS | I have the following javascript that adds a new row to the bottom of a table.It works fine in Firefox , but it does n't work in IE ( version 8 ) .There are no visible errors , as far as I can tell . Any ideas are very helpful ! | function addRow ( ) { // locate the last row in the table var table = document.getElementById ( `` approversTable '' ) ; var rows = document.getElementsByTagName ( `` tr '' ) ; var rowToClone ; for ( var i=0 ; i < rows.length ; i++ ) { if ( rows [ i ] .id ! = `` '' ) { rowToClone = rows [ i ] ; } } // clone the row var... | why does n't this 'addRow ' javascript work in IE ? |
JS | I am trying to write javascript code to find all the urls inside a div . Now this would be pretty easy if all the urls within the div were separated by spaces in which case I can just do a regex on what 's inside the div to find them . However , the urls within this outer div may be in sub divs ( or any other html tag ... | < div id= '' outer '' > < div > www.foo.com < /div > www.bar.com < /div > | Replacing all urls in a div |
JS | I am able to filter the elements of matrix W to elements that satisfy the conditional statement = > keep elements in each inner matrix that is below the median value . The elements of the median array are the median values for each inner array . I used a for-loop , but the resulting Wmin array is flattened . My goal is... | const W = [ [ 45 , 60 , 15 , 35 ] , [ 45 , 55 , 75 ] , [ 12 , 34 , 80 , 65 , 90 ] ] ; const median = [ 40 , 55 , 65 ] ; const Wmin = [ ] ; for ( let j = 0 ; j < W.length ; j++ ) { for ( let k = 0 ; k < W [ j ] .length ; k++ ) { if ( W [ j ] [ k ] < median [ j ] ) { Wmin.push ( W [ j ] [ k ] ) ; } } } console.log ( Wmin... | Get unflattened filtered Multidimensional Array in Javascript |
JS | In my spelling game at the moment , the grid is designed for 3 letter words . I can add bigger words into the `` wordList '' ( which creates the grid dynamically ) , but the size of the grid changes and overlaps on the rows where the bigger words are.At the moment when a four letter word is added for example , the grid... | < ul style= '' display : none ; '' id= '' wordlist '' > < li data-word= '' rat '' data-audio= '' http : //www.wav-sounds.com/cartoon/bugsbunny1.wav '' data-pic= '' http : //www.clker.com/cliparts/C/j/X/e/k/D/mouse-md.png '' > < /li > < /ul > var listOfWords = [ ] ; var rndWord = [ ] ; var counter = 0 ; var ul = documen... | Stopping overlap for bigger words |
JS | I use jQuery to intentionally remove css classes from elements in a potentially large html table . See below for an explanation why I am doing that.Currently I am doing it like this : The table sometimes is large and has many elements . I would like to speed up the page load / DOM manipulation.The IE 's built-in Javasc... | var tableElements = $ ( `` # TreeListElemente '' ) .find ( `` * '' ) .addBack ( ) ; tableElements.removeClass ( `` dxtl dxtl__B2 dxtl__B0 dxtlSelectionCell dxtlHeader dxtl__B3 dxtlControl dx-wrap dxtl__IM dxeHyperlink '' ) ; $ ( `` # TreeListElemente , # TreeListElemente [ class ] '' ) .removeClass ( `` dxtl dxtl__B2 d... | Optimizing jQuery selector / addBack ( ) when dealing with a large collection |
JS | I 've got some very odd behaviour going on . I have the following JQuery : There is some kind of race condition going on , such that the element does n't end up getting hidden . If I put a debugger on that line and step through the code , it works fine and the element fades out and gets hidden . Call it a Heisenbug.My ... | myElement.fadeOut ( 100 ) ; | Does the JS debugger suspend the whole JS event loop ? |
JS | So , I 'm trying to save and load a cookie that contains a list of product details and then display these product details to the page . However when I run this what I receive is a ReferenceError : Ca n't find variable : GetProductPrice when trying to read the cookies I stored using the GetProductPrice ( ) function . Th... | function setUpProducts ( ) { //in here we define each of the products when we first start up . This way we know what products the customer has access to . setUpPages ( ) ; try { hasRun = getCookie ( 'hasRunCookie ' ) ; //get the has run cookie from before , or at least try to } catch { hasRun = 0 ; } //if ( hasRun ! = ... | Issue with storing and recalling cookies Javascript |
JS | I 'm fairly new to Javascript ( just finished the book Eloquent Javascript ) , and am currently reading AngularJS from O'Reilly . And getting this small snippet of code to work from the book drove me crazy for hours and led me down rabbit holes thinking I messed up somewhere in setting up my environment.The only differ... | < ! doctype html > < html ng-app > < body ng-controller= '' TextController '' > < p > { { someText } } < /p > < script src= '' angular.min.js '' > < /script > < script > function TextController ( $ scope ) { $ scope.someText = 'You have started your journey . ' ; } < /script > < /body > < /html > | Why is the variable name `` $ scope '' necessary ? |
JS | I really want to get this working with no jQuery if possible . I 'm trying to make the SVG path called `` mouth '' be animated through the slider with JavaScript , so the path will seamlessly move to appear sad or happy . | < ! DOCTYPE HTML > < html > < head > < meta charset= '' UTF-8 '' > < meta name= '' description '' content= '' Pattern editor '' > < meta name= '' keywords '' content= '' HTML , CSS , SVG , JavaScript '' > < script > < ! [ CDATA [ function refresh ( ) { var slider1 = parseInt ( document.getElementById ( `` slider1 '' ) ... | JavaScript , SVG , HTML , and CSS |
JS | I have an example of my current work here : https : //jsfiddle.net/pv5xroLc/My problem is that when the table in my example is fully scrolled to the right , the faded gradient still covers part of my table even though it can not be scrolled further , thus it makes the last column harder to read . I am wondering what th... | < div class= '' fader '' > < div class= '' scrollable '' > *content* < /div > < /div > | Best approach to hide an absolutely positioned < div > when horizontally scrolling ? |
JS | I am currently stuck with a small issue here . I have used a mark-up like this : SnippetProblemI am trying to design a User Profile Bar , which when live , it should be this way : This is what I am trying to achieve here , when the button is clicked . And also what happens is , the menu does n't get displayed , because... | $ ( function ( ) { $ ( `` .more-options '' ) .click ( function ( ) { $ ( this ) .closest ( `` .user-profile '' ) .toggleClass ( `` open '' ) ; return false ; } ) ; } ) ; /* Reset */* { margin : 0 ; padding : 0 ; list-style : none ; font-size : 12pt ; } a { text-decoration : none ; } /* Main CSS */.user-profile { border... | Better approach for User Profile bar |
JS | I am developing a Chrome extension and my requirement is to create element ( button ) on page for each tab open and wants to show simple alert message on clicking button..it works properly for all but it always creating issue with Gmail , Facebook and Stackoverflow..please help me to resolve this issue.I am having the ... | manifest.json ... . ... . `` content_scripts '' : [ { `` matches '' : [ `` http : //*/* '' , `` https : //*/* '' ] , `` css '' : [ `` style.css '' ] , `` js '' : [ `` contentScript.js '' ] , `` all_frames '' : false , `` run_at '' : `` document_idle '' } ] ... . ... . ... ... .. function addButton ( ) { document.body.i... | Element created by Content script on page creating issue with Gmail , Facebook , stackoverflow etc |
JS | I 'm wondering if these two blocks of code are the same in Node.js ? Since above I 'm passing 0 for the timeout , there should be no waiting time . Is it identical to just calling console.log ( 'hello ' ) ; directly without using setTimeout ? | // Style 1setTimeout ( function ( ) { console.log ( 'hello ' ) ; } , 0 ) ; // Style 2console.log ( 'hello ' ) ; | Javascript are these calls the same in Node.js ? |
JS | I am using the code showed below to create 46 small circles within a wrapper ( div ) draw-shapes ; All drawings are made with the Two.js library . I read in the documentation I can change the id of the created element , but I also need to assign a class to each element . I have tried everything from pure js setAttribut... | let elem = document.getElementById ( 'draw-shapes ' ) ; let params = { width : 1024 , height : 768 } ; let two = new Two ( params ) .appendTo ( elem ) ; for ( let i = 1 ; i < 47 ; i++ ) { circle = two.makeCircle ( x , y , radius ) ; circle.fill = 'green ' ; circle.stroke = 'white ' ; circle.linewidth = 1 ; circle.id = ... | Can I add class to dynamically created two.js element ? |
JS | I 'm writing a little cached function in a plugin / library . It takes a HTMLElement and returns a Decorator.Here I 'm storing some expensive operation in a cache by the id of the HTMLElement . This is a O ( 1 ) lookup but it uses the `` bad practice '' of setting elem.id and having a side effect.The alternative would ... | return function _cache ( elem ) { if ( elem.id === `` '' ) { elem.id = PLUGIN_NAME + `` _ '' + uid++ ; } if ( cache [ elem.id ] === void 0 ) { cache [ elem.id ] = _factory ( elem ) ; } return cache [ elem.id ] ; } return function _cache ( elem ) { for ( var i = 0 , ii = cache.length ; i++ ) { var o = cache [ i ] ; if (... | Is setting element.id as a side effect bad practice ? |
JS | Here My requirement is once we select the SON or Father in one select box and if I select 'Mother-In-law ' or 'Father-In_law ' in another select boxes , I want one alert message like 'In-laws are not applicable'.Here is my code , Can any one help me please . The jsFiddle is here.-Thanks . | if ( arr.indexOf ( ! ( ( $ ( this ) .val ( ) == 'Son ' || $ ( this ) .val ( ) == 'Father ' ) ) ) > -1 ) { alert ( 'In-laws are not applicable ' ) ; return false ; } | Validation for dropdown boxes selection ? |
JS | I stumbled upon the following ES6 method during a rewiew : This seems buggy to me . I would have expected the following : But then , I know that async has many tricks such as auto-wrapping promises , so is my intuition correct ? | async getUsers ( res ) { User.findAll ( ) .then ( users = > res.json ( users ) ) ; } async getUsers ( res ) { return User.findAll ( ) .then ( users = > res.json ( users ) ) ; } | What is the correct syntax for a method declared as async ? |
JS | Maybe this question is easy , but I ca n't understand now.If you know the reason , please tell me why the result is `` false '' . | String.prototype.self=function ( ) { return this ; } var s= '' s '' ; alert ( `` s '' .self ( ) == '' s '' .self ( ) ) //false ; alert ( s.self ( ) ==s.self ( ) ) //false ; | The inheritance of javascript |
JS | I 've been reading a few articles , and have n't found the example that solves my issue.My understanding is that : ng-if and ng-repeat create isolate scopes.Using $ parent.someProperty is bad.Using $ parent. $ parent.someProperty would be an abomination.So , with the given template markup , how can I properly bind the ... | < div ng-app= '' MyApp '' ng-controller= '' MyCtrl '' > < div ng-if= '' showOnCondition '' > < label ng-repeat= '' item in repeatingItems '' > { { item } } < setting item= '' item '' / > < /label > < /div > { { checkSetting ( ) } } < /div > var myApp = angular.module ( 'MyApp ' , [ ] ) ; myApp.controller ( 'MyCtrl ' , ... | Proper method to handle Angular scope instead of $ parent. $ parent |
JS | How can I get this effect below to happen inside the modal ? I have tried a bunch of methods and it seems like I am missing something . When I put all of the content in the .wrap div inside the `` MODAL CONTENT '' div it no longer shows anywhere . Then when I correct the css to target the modal properly # myModal modal... | var lFollowX = 0 , lFollowY = 0 , x = 0 , y = 0 , friction = 1 / 30 ; function moveBackground ( ) { x += ( lFollowX - x ) * friction ; y += ( lFollowY - y ) * friction ; translate = 'translate ( ' + x + 'px , ' + y + 'px ) scale ( 1.1 ) ' ; $ ( '.bg ' ) .css ( { '-webit-transform ' : translate , '-moz-transform ' : tra... | How to make JS/Jquery perspective effect work inside modal ? |
JS | I 'm new to JavaScript and I wonder why it 's not working for me : I also tried to save $ ( this ) as a variable when clicking the .class , but that did n't work for me also . | function resetColor ( ) { $ ( this ) .css ( { `` color '' : `` red '' } ) } $ ( '.class ' ) .click ( function ( ) { resetColor ( ) ; } ) ; | Use $ ( this ) in an outside function |
JS | In my state I have showTab1 , showTab2 , showTab3 . If tab i is selected , then the other tabs are set to false . So in my render function I want to be able to return something like this : But I know that it 's not allowed to have multiple returns , or at least it 's considered bad practice . How can I get around this ... | return ( < div > { ( ( ) = > { if ( someCondition ) { if ( this.state.showTab1 ) { return ( < div > < Tab1/ > < /div > ) } else if ( this.state.showTab2 ) { return ( < div > < Tab2/ > < /div > ) } else if ( this.state.showTab3 ) { return ( < div > < Tab3/ > < /div > ) } } return < span / > ; } ) ( ) } < AnotherComponen... | React - How to return one of several components in the render function ? |
JS | We have a html div ( first image ) and array of strings ( see second image ) We have to assign the single index like safety [ A4 ] and safety [ A5 ] to the text of div.But currently it assign two footnote to same text like safety [ A5 ] [ A4 ] since safety occurs two times in the html div.Our current attempt is : How c... | for ( var i = 0 ; i < totalNumberOfItemsInCorrelationGrid ; i++ ) { var currentDataItem = data [ i ] ; arr = new Array ( currentDataItem.correlation_text , currentDataItem.corr ) ; arrOfCorrelatedTextOfCorrelationGrid.push ( arr ) ; } // sorting from bigger length of string to smaller length of stringarrOfCorrelatedTex... | assigning index to text of div jquery |
JS | I have some PHP and front-end JavaScript experience , but am trying to make a Node.js REST API to serve the Vue.js client-side of one of my applications , however I am struggling to get around a certain concept . So far I have primarily been following documentation and guides online.I am using Express.js and a MySQL da... | // constructorconst Customer = function ( customer ) { this.email = customer.email ; this.name = customer.name ; this.active = customer.active ; this.created_at = customer.created_at } ; Customer.getAll = result = > { sql.query ( `` SELECT * FROM customers '' , ( err , res ) = > { if ( err ) { console.log ( `` error : ... | How to handle non traditional queries in Node.js REST APIs |
JS | I have a page where I 've tried to put a JQuery dialog where data is entered and later goes to a server . The problem I 've encountered is that the dialog is outside the form tag , since that whole data I enter is lost somewhere . It looks like this : I 've tried this so far : But it only appends dialogAddPart , not it... | var dialogAddPartDiv = $ ( '.dialogAddPart ' ) ; $ ( 'form ' ) .append ( dialogAddPartDiv ) ; | How do I put a dialog div in form tag |
JS | According to JavaScript - The Definitive guide , JavaScript assumes that the source code it is interpreting has already been normalized and makes no attempt to normalize identifiers , strings , or regular expressions itself.The Unicode standard defines the preferred encoding for all characters and specifies a normaliza... | `` café '' === `` caf\u00e9 '' // = > true `` café '' === `` cafe\u0301 '' // = > false | Who performs unicode normalization and when ? |
JS | Here is my code : The result should be just three and two in console . Because just they contain t letter . But as you see all values will be shown in the console.As I 've mentioned , I 'm trying to make a small search engine for a autocomplete box . How can I fix it ? | if ( $ ( 'span ' ) .text ( ) .indexOf ( `` t '' ) ) { console.log ( $ ( 'span ' ) .text ( ) ) ; } < script src= '' https : //ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js '' > < /script > < span > one < /span > < span > two < /span > < span > three < /span > < span > four < /span > < span > five < /span > < ... | How to search at element 's value ? |
JS | Possible Duplicate : What does this mean ? ( function ( x , y ) ) { … } ) { a , b ) ; in JavaScript I am a starter to javascript . I know to write JS userdefined functions . But recently I came across some thing that I can ’ t recognize . Can anyone explain to me what this is ? What is the meaning of this ? When I Goog... | ( function ( window , undefined ) { var jQuery = ( function ( ) { } ) ; window.jQuery = window. $ = jQuery ; } ) ( window ) ; function foo ( ) { alert ( `` This is an alert '' ) ; } | why are javascript functions like this |
JS | Let 's say I have 7 small bins , each bin has the following number of marbles in it : I assign these small bins to 2 large bins , each with the following maximum capacity : I want to find EVERY combination of how the small bins can be distributed across the big bins without exceeding capacity ( eg put small bins # 4 , ... | var smallBins = [ 1 , 5 , 10 , 20 , 30 , 4 , 10 ] ; var largeBins = [ 40 , 50 ] ; //Brute forcevar smallBins = [ 1 , 5 , 10 , 20 , 30 , 4 , 10 ] ; var largeBins = [ 40 , 50 ] ; function getLegitCombos ( smallBins , largeBins ) { var legitCombos = [ ] ; var assignmentArr = new Uint32Array ( smallBins.length ) ; var i = ... | Efficiently find every combination of assigning smaller bins to larger bins |
JS | Executing this recursive fibonacci function takes around 9.5 seconds on my machine , using a traditional approach : However , when I wrap the body of the function in another function that gets executed right away , execution drops to 7.5 seconds : This is a huge speedup ( ~30 % ! ) , but I can not figure out why wrappi... | const fib = n = > { if ( n == 1 ) return 0 ; if ( n == 2 ) return 1 ; return fib ( n - 1 ) + fib ( n - 2 ) ; } ; console.log ( fib ( 45 ) ) ; ➜ time node index.js701408733node index.js 9,50s user 0,04s system 99 % cpu 9,566 total const fib = n = > { return ( ( ) = > { if ( n == 1 ) return 0 ; if ( n == 2 ) return 1 ; r... | Why is this wrapped function call faster than a regular function ? |
JS | I 'm trying to select only certain values from my object to write into a file . But this writes the whole object and also unless I use util.inspect it just writes as objects . This should write the values I have chosen from the objects line by line as they come in : objectsTotal comes through the function like : The ou... | var objectsToFile = function ( objectsTotal ) { objectsTotal = _.values ( objectsTotal , function ( value ) { return value.objectTo.employeeName ; } ) ; objectsTotal = _.values ( objectsTotal , function ( value ) { return value.employeeCurrent ; } ) ; objectsTotal = _.values ( objectsTotal , function ( value ) { return... | Node WriteFile not writing objects I need using underscore . Writes the whole objects |
JS | I have an anchor link with no destination , but it does have an onClick event : I understand that I can not directly execure PHP code blocks in JavaScript due to the nature of PHP and it being a server side language , so I have to utilize AJAX to do so . When the delete link is clicked , I need it to execute this query... | < li > < a href onClick='deletePost ( ) ' > Delete < /a > < /li > < ? php include ( `` connect.php '' ) ; $ delete_query = mysqli_query ( $ connect , `` DELETE FROM user_thoughts WHERE id = 'id ' `` ) ; ? > function deletePost ( ) { xmlhttp=new XMLHttpRequest ( ) ; xmlhttp.onreadystatechange = function ( ) { if ( xmlht... | Using AJAX to execute a PHP script through a JavaScript function |
JS | I have a certain custom validation directive in my application ( code attached below ) .The problem is that when one or more of the form fields are required , and chrome fills them automatically , the fields remain invalid until the user changes them manually.I suspect that this happens due to the fact that chrome fill... | app.directive ( 'myValidate ' , function ( $ timeout , $ filter ) { return { require : 'ngModel ' , link : function ( scope , elm , attrs , ctrl ) { var validator = function ( viewValue ) { var viewValueStr = viewValue + `` ; scope.valid = true ; scope.fieldName = attrs.name ; var nameStr = attrs.name + `` ; if ( ! att... | $ parsers \ $ formatters functions are not firing when the browser fills the form field automatically |
JS | I built a component that is basically a rating system that allows you to add more icons depending on the dropdown . I was wondering if there was a way to make half stars , I 've looked through older code on the internet , but there is n't anything that has been updated . Any help with be appreciated | import React , { useState } from 'react'import { FaStar } from `` react-icons/all '' ; import './Rater.css'const Rater = ( ) = > { const [ rating , setRating ] = useState ( null ) const [ hover , setHover ] = useState ( null ) const [ value ] = useState ( 100 ) const [ iconValue , setIconValue ] = useState ( 5 ) return... | Setting up half-icons with a rating system |
JS | I want to catch numbers appearing anywhere in a string , and replace them with `` ( .+ ) '' .But I want to catch only those numbers which have an even number of % s preceding them . No worries if any surrounding chars get caught up : we can use capture groups to filter out the numbers.I 'm unable to come up with an ECM... | abcd % 1 % % 2 % % % 3 % % % % 4 efghabcd % 12 % % 34 % % % 666 % % % % 11efgh | How to match only those numbers which have an even number of ` % ` s preceding them ? |
JS | My expectation from the following code would be that if I checked a.name , it would search the prototype and return it as it was declared . Can anyone pinpoint what it is that is preventing JS from acknowledging my prototype ? | var obj = function ( parent ) { return { prototype : parent } } ; var me = { name : 'keith ' } ; var a = new obj ( me ) // = > undefineda.name// = > undefineda.prototype.name// = > `` keith '' | Javascript Prototype Quirk - Can Anyone Explain This ? |
JS | Suppose you want to launch a ( random ) process for every folder in a list in a short code : If the list is long , i might end up running a large amount of processes concurrently , which is to be avoid . What 's a fairly simple way to run the executions on a controlled rate ( maximum 5 concurrent process here ) ? edit ... | var exec = require ( 'child_process ' ) .exec ; var folders = [ ... ] ; // a list from somewhere_.each ( folders , function ( folder ) { exec ( `` tar cvf `` + folder + `` .tgz `` + folder ) ; } ) ; | Control the rate of a javascript asynchronous flow ( in a loop ) |
JS | The console shows undefined , rather than 'testing ' . What am I doing wrong ? | function a ( ) { this.testing = 'testing ' ; } function b ( ) { } b.prototype = new a ( ) ; console.log ( b.testing ) ; | Prototypal Inheritance . Whats wrong with this simple example ? |
JS | I have a textarea like this : Now I need to get the biggest number which is in [ ] . In this case I need to get 3 . How can I do that ? | < textarea > this is a test [ 1 ] also this [ 2 ] is a testand again [ 3 ] this is a test < /textarea > | How to get biggest number in textarea ? |
JS | As someone who is attempting to take a more object oriented approach to my javascript programming I 've hit a stumbling block which I 'm sure is probably something very basic , but , take the following object implementation ( assume that the jQuery object is available to this code ) : | function Foo ( ) { this.someProperty = 5 ; } Foo.prototype.myFunc = function ( ) { //do stuff ... } ; Foo.prototype.bar = function ( ) { //here 'this ' refers to the object Foo console.log ( this.someProperty ) ; $ ( '.some_elements ' ) .each ( function ( ) { //but here , 'this ' refers to the current DOM element of th... | JavaScript Scope question |
JS | I have two sets of data in a JSON ( data.json ) as below : And I have an HTML form which the user will use to login . On the click of the submit button I want to first check if the username ( stored in a var , say x ) entered belongs to the Admins list in my JSON file or not . Eg : if x is jhon I want to know if the sa... | UP = [ { `` password '' : `` jhonjhon '' , `` username '' : '' jhon '' } , { `` password '' : `` juliejulie '' , `` username '' : '' julie '' } , { `` password '' : `` blakeblake '' , `` username '' : '' blake '' } ] ; Admins = ' [ { `` Admin '' : '' jhon '' } , { `` Admin '' : '' julie '' } ] ' ; < html > < body > < f... | How to check for one JSON object being present in another |
JS | I have object structure like below I want to convert that object to below formatIf there is one more property after [ ' % ' , '- ' , '+ ' ] in above case , same process continues..Please suggest me to complete this logic . | var obj = { a : 1 , b : [ x , y , z ] , c : [ 0,1,3 ] , d : [ ' % ' , '- ' , '+ ' ] } { 1 : { x : { 0 : [ ' % ' , '- ' , '+ ' ] , // Last index remains as an array 1 : [ ' % ' , '- ' , '+ ' ] , 3 : [ ' % ' , '- ' , '+ ' ] } , y : { 0 : [ ' % ' , '- ' , '+ ' ] , // Last index remains as an array 1 : [ ' % ' , '- ' , '+ ... | How can I implement this logic |
JS | I 'm learning javascript . I know we can pass a function to other functions after the function is defined . But I need help on understanding this example : From what I can understand , func is an argument of map . I need to provide a function as func . But in the tutorial I 'm reading , it does n't mention where this f... | function map ( func , array ) { var result = [ ] ; forEach ( array , function ( element ) { result.push ( func ( element ) ) ; } ) ; return result ; } function count ( test , array ) { return reduce ( function ( total , element ) { return total + ( test ( element ) ? 1 : 0 ) ; } , 0 , array ) ; } | javascript : Passing functions |
JS | In some Javascript code which uses immediate function , it has argument window or document like the following : However , window and document are global objects and can be directly accessed as follow : What are the differences between the above two codes . Which is better way and why ? | ( function ( window , document ) { ... } ) ( window , document ) ; ( function ( ) { var userAgent = window.navigator.userAgent ; ... var el = document.getElementById ( ... ) ... } ) ( ) ; | What are the differences between following two javascript code ? |
JS | I 'm trying to apply prototyped inheritance to a function in Javascript . It 's all pretty plain and even described in Wikipedia 's javascript lemma . It works if my properties are simple javascript types : With Employee.prototype = new Person ( ) ; , all Person 's properties and ( prototyped ) methods are inherited by... | function Person ( ) { this.age = 0 ; this.location = { x : 0 , y : 0 , absolute : false } ; } ; function Employee ( ) { } ; Employee.prototype = new Person ( ) ; Employee.prototype.celebrate = function ( ) { this.age++ ; } var pete = new Employee ( ) ; pete.age = 5 ; pete.celebrate ( ) ; var bob = new Employee ( ) ; bo... | javascript prototyped inheritance and object properties |
JS | My code is : The button : I want the button to change to `` Downloading ... '' then return to `` Download as CSV '' a few seconds after , is this possible in JS ? | function changeText ( ) { document.getElementById ( 'button ' ) .innerHTML = 'Downloading ... ' ; } < button id = `` button '' onclick='changeText ( ) ' value='Change Text ' > Download file as CSV < /button > | How to return the previous text after an onclick JS function ? |
JS | I need to filter an array and I am totally drawing a blank on how to do so.I need to filter out the largest numbers . A number can be deemed larger when the first number is 'XXXX ' and the second is 'XXXX-1 ' , then the second number is larger . Or it can be deemed larger if the first number is 'XXXX-1 ' and the second... | [ '7851 ' , '7851-2 ' , '7851-1 ' , '2234 ' , '2235 ' , '2235-1 ' ] [ '7851 ' , '7851-1 ' , '2235 ' ] | filtering an array of strings |
JS | I want to check if an input element is a checkbox or text type.I know I can do this : But my question is : why do hasOwnProperty returns false ? I just want to use : but it returns false everytime.Is n't input an object ? I do n't think so , but typeof said it is : So what is going on ? ! Code example : The documentati... | //Type of input..if ( input.type === `` checkbox '' ) //Contains the property..if ( `` checked '' in input ) input.hasOwnProperty ( `` checked '' ) typeof input // returns `` object '' const input = document.querySelector ( `` input '' ) if ( input instanceof HTMLInputElement ) { console.dir ( input ) ; console.info ( ... | Why ca n't `` hasOwnProperty '' be used on instanceof HTMLInputElement ? |
JS | I have some JavaScript for three HTML divs , mm , ss and pp . These three fields are animated with each other ... If the contents of an external file change , these fields get updated in my page . They get updated with animations.If mm changes , then : ss hides , thenpp hides , thenmm hides , thendivs get updated , the... | if ( $ ( ' # mm ' ) .html ( ) ! = mm ) { hideElem ( '.score ' ) ; setTimeout ( function ( ) { hideElem ( '.player ' ) ; setTimeout ( function ( ) { hideElem ( '.match ' ) ; setTimeout ( function ( ) { updateElems ( ) ; setTimeout ( function ( ) { showElem ( '.match ' ) ; setTimeout ( function ( ) { showElem ( '.player ... | Cleaning up some ridiculous JavaScript code |
JS | I have this html code : Is it possible to delete all elements with `` first div '' class if the background image is not : url ( https : //good.jpg ) ; ? so the final response will be : I would be grateful for any assistance , thank you ! | < div class= '' first div '' > < div class= '' second '' > < div class= '' title '' > Hi < /div > < div class= '' test-icon '' style= '' background-image : url ( https : //1.jpg ) ; '' > < /div > < /div > < /div > < div class= '' first div '' > < div class= '' second '' > < div class= '' title '' > Hi < /div > < div cl... | jquery/javascript remove div if jpg not match |
JS | In my Webapp I need to implement an API , which does not contain any ES6 class definitions , but I would like to extend of one of these classes and override some methods . Overriding does not work properly ... I expect `` B '' as result but the method of `` class '' A gets executed . | function A ( ) { this.msg = function ( ) { console.log ( `` A '' ) ; } } class B { constructor ( ) { A.call ( this ) ; } msg ( ) { console.log ( `` B '' ) ; } } new B ( ) .msg ( ) ; | JavaScript override from a non ES6 class to an ES6 class |
JS | Inspired by preact 's `` no build tools route '' , I recently created a project with no build or bundling process . Conceptually , it looks like this ( pseudo code following ) .I have a dependency on react-button which uses e.g . microbundle to resolve the preact import through the node_modules folder.Then , there 's m... | // dependency 1 : `` preact-button '' npm package ( uses bundler ) import { h , Component , render } from 'preact ' ; const button = h ( 'button ' , null , 'Click ' ) ; export default Button ; < ! doctype html > < html > < head > < meta charset= '' utf-8 '' / > < title > SO App < /title > < script type= '' module '' > ... | Is mixing bundled modules and JavaScript Modules possible |
JS | I am actually not sure if I just stumbled upon an unwanted behavior in javascript or if this is somehow intended behavior . The following code results in a true statement : http : //jsfiddle.net/xyatxm2g/2/If I change it to the following code , it returns false as it should : http : //jsfiddle.net/fg06ovvc/2/ | var test= { `` test '' :1 } document.write ( `` constructor '' in test ) ; var test= { `` test '' :1 } document.write ( test.hasOwnProperty ( `` constructor '' ) ) ; | Odd javascript behavior for checking `` constructor '' key in object |
JS | I 'm using jVectorMaps . I have a map object with a backgroundColor property : Let 's say I declare a global bgcolor variable . Then , I change the value of that variable at some point : The idea is that the jVectorMap background color changes when I change the value of the bgcolor variable . So far I was not able to d... | map = new jvm.Map ( { container : $ ( ' # map ' ) , map : `` world_mill_en , backgroundColor : bgcolor function changeBGcolor ( ) { bgcolor = `` yellow '' ; } | Dynamically change object property |
JS | Is it possible to alias e.g . the HTMLElement.offsetWidth property , the same way I can alias methods likeI tried : but got : TypeError : 'offsetWidth ' getter called on an object that does not implement interface HTMLElement . | EventTarget.prototype.on = EventTarget.prototype.addEventListener HTMLElement.prototype.w = HTMLElement.prototype.offsetWidth | Aliasing interface property |
JS | For example I found some api library that is based on promises , and I need to issue api requests using this library in some interval , infinite times ( like usual back-end loop ) . This api requests - actually chain of promises.So , if I write function like : Will it cause stack overflow ? Solutions that I come up wit... | function r ( ) { return api .call ( api.anotherCall ) .then ( api.anotherCall ) .then ( api.anotherCall ) ... .then ( r ) } function r ( ) { return api .call ( api.anotherCall ) .then ( api.anotherCall ) .then ( api.anotherCall ) .then ( ( ) = > { setTimeout ( r , 0 ) } ) } | Recursive promises can cause stack overflow ? |
JS | This is a part of infinite scroll which also works when we scroll upwards : JS code : Js Fiddle : http : //jsfiddle.net/LRLR/ocfLkxex/Issue : Whenever prependTo is called , the data is shifted downwards and new data is added at the top . The scrollbar seems to ignores this , and from the users ' point of view , everyth... | < div id= '' sContainer '' > < div class= '' message0 '' > Initial Content 111 < /div > < div class= '' message1 '' > Initial Content 222 < /div > < div class= '' message2 '' > Initial Content 333 < /div > < div class= '' message3 '' > Initial Content 444 < /div > < div class= '' message4 '' > Initial Content 555 < /di... | When prepending data to vertically-scrolled document , how can I keep previous part visible ? |
JS | Why does the first input work correctly , but the second input gives me a result for 5 hours ago ? how can i get the second one to cooperate with me ? | new Date ( `` 2000-1-1 '' ) Sat Jan 01 2000 00:00:00 GMT-0500 ( EST ) new Date ( `` 2000-01-01 '' ) Fri Dec 31 1999 19:00:00 GMT-0500 ( EST ) var a = new Date ( `` 2000-1-1 '' ) ; // Sat Jan 01 2000 00:00:00 GMT-0500 ( EST ) var b = new Date ( `` 2000-01-01 '' ) ; // Fri Dec 31 1999 19:00:00 GMT-0500 ( EST ) console.lo... | Similar Date Format produces unexpected date Javascript |
JS | So I 'm just about to add a new function to our every growing list of global ones ( sigh ) and noticed the last user used a variable assignment over simple function a ( ) { } .I created a test to see if it made a difference ; It does , but a conflicting one . ( chrome favours the simple function , while firefox the var... | function aFunction ( ) { return null ; } var bFunction = function ( ) { return null ; } | Why would assigning a function to a var be different than simply defining it ? |
JS | I am using Syncano as a baas , where I am trying to call an external API to receive a JSON array . This JSON needs to be parsed and afterwards stored in syncano . Before that I need to receive the reference object from the DB to link it to the new team object.I receive the team ( json ) array & reference object success... | //TODO : get from ARGS when executing this codeboxvar teamKey = 394 ; var requestURL = 'http : //api.football-data.org/v1/soccerseasons/ ' + teamKey + `` /teams '' ; var request = require ( `` request '' ) ; var Syncano = require ( 'syncano ' ) ; var Promise = require ( 'bluebird ' ) ; var account = new Syncano ( { acc... | Syncano Codebox - Call API - parse JSON - get Reference - Save new Objects |
JS | Note : I do the javascript code according to the ajrwhite answer . Hope it helps someone . Link : http : //codepen.io/eMineiro/pen/EKrNBe Open codepen console to see the examples working.In poker we define player position according to the dealer . Like this : Blue : Small Blind and Big Blind positionsGreen : Late and D... | players : [ 1,2,3,4,5,6,7,8,9,10 ] ; positions : [ `` bb '' , '' sb '' , '' btn '' , '' late '' , '' medium '' , '' medium '' , '' medium '' , '' early '' , '' early '' , '' early '' ] ; changePosition ( 10 ) ; //means that `` player10 '' now is the new Dealer players : [ 2,1,10,9,8,7,6,5,4,3 ] ; positions : [ `` bb ''... | Determine Poker Table Positions - Sit ' n Go Tournaments |
JS | Is there an easier / shorter way with Jquery for writing an if statement like this : The number variable is just an input field where the user enters a number from 0 - 10.Thank you ! | if ( number === `` 0 '' ) { degrees = `` -160 '' ; } if ( number === `` 1 '' ) { degrees = `` -158 '' ; } if ( number === `` 2 '' ) { degrees = `` -156 '' ; } if ( number === `` 3 '' ) { degrees = `` -154 '' ; } if ( number === `` 4 '' ) { degrees = `` -152 '' ; } if ( number === `` 5 '' ) { degrees = `` -150 '' ; } if... | Shorter way to write Jquery If Statement with multiple options for the `` IF '' |
JS | I have the following block of code that tracks a click on a button and then records analytics in mixpanel.On its own , activity is NOT being tracked in MixPanel . However , when I add alert ( 'added ' ) ; beneath the mixpanel tracking code , all of a sudden it works perfectly.Why ? Update : since some people asked , th... | < script type= '' text/javascript '' > $ ( '.buy ' ) .click ( function ( ) { var myPart = $ ( ' # part-name ' ) .text ( ) ; var myDistributor = $ ( this ) .closest ( 'tr ' ) .children ( '.distributor ' ) .text ( ) ; mixpanel.track ( `` Buy Part Link '' , { `` PartName '' : myPart , `` Distributor '' : myDistributor } )... | Why does a piece of Javascript only work when I have an alert beneath it ? |
JS | I have an array of strings in JavaScript . The array is defined like the following : I need to loop through the array and call a function that runs asynchronously . That function looks like this : I 'm trying to iterate through all of the items in my array and figure out how long it takes to run all of them . I want to... | var myArray = [ ] ; myArray.push ( ' 1 ' ) ; myArray.push ( ' 2 ' ) ; myArray.push ( ' 3 ' ) ; function myAsyncFunction ( id , callback ) { $ .ajax ( { url : '/api/items ' , data : { 'id ' : id } , type : 'POST ' , dataType : 'text ' , success : function ( result ) { if ( callback ) { callback ( ) ; } } , error : funct... | JavaScript Arrays with Async Functions |
JS | I am using div to layout a page . The page has two columns . The first column is a map . The second column contains three rows of graphs . I used the code below . The result gives me just one column ( instead of two ) with four rows . What am I doing wrong ? | < ! -- This is where the map will live -- > < div id= '' map-container '' style= '' width:1000px ; height:500px '' > < /div > < ! -- CHARTS ! ! ! -- > < div class= '' row '' > < ! -- row chart -- > < div class= '' col-md-1 '' > < div id= '' rowchart2 '' class= '' dc-chart '' > < /div > < center > < div class= '' title ... | how to use div to layout page |
JS | I have an extend method included in my library , making it possible for methods to be added to the core library : In use it looks like so : Users are then able to call the plugin like so : This works but I 'm not exactly happy with the approach and have been trying to find an alternative pattern to make this work . The... | library.prototype.extend = function ( name , plugin ) { library.prototype [ name ] = plugin.init ; for ( var method in plugin ) { if ( method ! == 'init ' ) { library.prototype [ name ] .prototype [ method ] = plugin [ method ] ; } } } ; library.prototype.extend ( 'aReallyInterestingPlugin ' , { //the init method gets ... | Improving the implementation of a plugin architecture |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.