id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
value |
|---|---|---|
Mmdn_built_in_objects/4usesofjavascriptsar_138_0.txt | const newName = map.call(name, eachLetter => {
return `${eachLetter}a`
}) | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_70_9.txt | instance from an iterable or array-like object.
[ ` Array.fromAsync() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync)
Creates a new ` Array ` instance from an async iterable, iterable, or array-
like object.
[ ` Array.isArray() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_5_3.txt | )
The **` toLocaleString() ` ** method of [ ` Array ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Array) instances returns a
string representing the elements of the array. The elements are converted to
strings using their ` toLocaleString ` methods and these strings are separated
by a locale-specific string... | |
Mmdn_built_in_objects/jsmapsasp_308_0.txt | ](/colors/colors_picker.asp "Color Picker") | |
Mmdn_built_in_objects/4usesofjavascriptsar_3_0.txt | * Featured Products | |
Mmdn_built_in_objects/Mmdn_built_in_objects_8_2.txt | mes on the
call stack, the value of ` f.arguments ` represents the arguments
corresponding to the most recent invocation of the function.
The value of the ` arguments ` property is normally [ ` null ` ](/en-
US/docs/Web/JavaScript/Reference/Operators/null) if there is no outstanding
invocation of the function in progr... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_71_2.txt | aScript/Reference/Global_Objects/Array/values)
43. [ ` Array.prototype.with() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with)
6. **Inheritance**
7. **[ ` Function ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) **
8. Constructor
1. [ ` Function() constructor ` ](/en-... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_0_3.txt | e below.
### Symbol as function name
If a [ ` Symbol ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Symbol) is used a function
name and the symbol has a description, the method's name is the description in
square brackets.
js
const sym1 = Symbol("foo");
const sym2 = Symbol();
... | |
Mmdn_built_in_objects/jsmapsasp_225_0.txt | [ C++
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Mmdn_built_in_objects/Mmdn_built_in_objects_92_5.txt |
Non-standard
]: Non-standard. Check cross-browser support before using.
*[
Deprecated
]: Deprecated. Not for use in new websites.
| |
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Mmdn_built_in_objects/4usesofjavascriptsar_132_0.txt | ## How to Convert a JS String to an Array | |
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Mmdn_built_in_objects/jsmapsasp_421_0.txt | #### [ COLOR PICKER ](/colors/colors_picker.asp) | |
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Mmdn_built_in_objects/jsmapsasp_273_0.txt | #### Where To Start | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_89_4.txt | lobal_Objects/Array#generic_array_methods) .
It only expects the ` this ` value to have a ` length ` property and integer-
keyed properties. Although strings are also array-like, this method is not
suitable to be applied on them, as strings are immutable.
## Examples
### Using copyWithin()
js
consol... | |
Mmdn_built_in_objects/jsmapsasp_83_0.txt | [ Learn Python ](/python/default.asp "Python Tutorial") [ Tutorial
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Mmdn_built_in_objects/4usesofjavascriptsar_194_0.txt | [ 
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Mmdn_built_in_objects/Mmdn_built_in_objects_56_3.txt | b/JavaScript/Reference/Global_Objects/Array) instance represents the
number of elements in that array. The value is an unsigned, 32-bit integer
that is always numerically greater than the highest index in the array.
## Try it
## Value
A nonnegative integer less than 2 32 .
Property attributes of ` Array: length... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_76_3.txt | 5. [ async function expression ](/en-US/docs/Web/JavaScript/Reference/Operators/async_function)
6. [ async function* expression ](/en-US/docs/Web/JavaScript/Reference/Operators/async_function*)
7. [ await ](/en-US/docs/Web/JavaScript/Reference/Operators/await)
8. [ Bitwise AND (&) ](/en-US/docs/Web/JavaS... | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_76_8.txt | cript/Reference/Errors/No_properties)
59. [ TypeError: "x" is (not) "y" ](/en-US/docs/Web/JavaScript/Reference/Errors/Unexpected_type)
60. [ TypeError: "x" is not a constructor ](/en-US/docs/Web/JavaScript/Reference/Errors/Not_a_constructor)
61. [ TypeError: "x" is not a function ](/en-US/docs/Web/JavaScrip... | |
Mmdn_built_in_objects/javascriptmapmethod_12_0.txt | ## ` map ` Method Basics | |
Mmdn_built_in_objects/Mmdn_built_in_objects_94_5.txt | -US/docs/Web)
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Mmdn_built_in_objects/jsmapsasp_387_0.txt | fruits.get("apples"); // Returns 500 | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_96_5.txt | ion
# sec-object.prototype.constructor
](https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-
object.prototype.constructor)
## Browser compatibility
BCD tables only load in the browser with JavaScript enabled. Enable
JavaScript to view data.
## See also
* [ ` class ` ](/en-US/docs/Web/JavaScr... | |
Mmdn_built_in_objects/322323_24_0.txt | [ ilenia ](https://forum.freecodecamp.org/u/ilenia) October 17, 2019, 12:34pm
6 | |
Mmdn_built_in_objects/jsmapsasp_373_0.txt | ## The set() Method | |
Mmdn_built_in_objects/jsmapsasp_18_0.txt | [ Learn Bootstrap ](/bootstrap/bootstrap_ver.asp "Bootstrap Tutorials") [
Overview ](/bootstrap/bootstrap_ver.asp "Bootstrap Tutorials") | |
Mmdn_built_in_objects/jsmapsasp_138_0.txt | [ CSS ](/css/css_exercises.asp "CSS Exercises") [ Exercise
](/css/css_exercises.asp "CSS Exercises") [ Quiz ](/css/css_quiz.asp "CSS
Quizzes") | |
Mmdn_built_in_objects/jsmapsasp_158_0.txt | [ PHP ](/php/php_exercises.asp "PHP Exercises") [ Exercise
](/php/php_exercises.asp "PHP Exercises") [ Quiz ](/php/php_quiz.asp "PHP
Quizzes") | |
Mmdn_built_in_objects/jsmapsasp_154_0.txt | ### Backend | |
Mmdn_built_in_objects/javascriptmapmethod_23_0.txt | const numbers = [1, 2, 3, 4, 5];
const doubledNumbers = [];
for (let i = 0; i < numbers.length; i++) {
doubledNumbers.push(numbers[i] * 2);
}
// doubledNumbers: [2, 4, 6, 8, 10] | |
Mmdn_built_in_objects/Mmdn_built_in_objects_84_1.txt | ` Array.prototype.entries() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries)
6. [ ` Array.prototype.every() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every)
7. [ ` Array.prototype.fill() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill)
8. [ ` Arra... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_51_1.txt | /en-US/docs/Web/JavaScript/Guide/Regular_expressions)
10. _[ Indexed collections ](/en-US/docs/Web/JavaScript/Guide/Indexed_collections) _
11. [ Keyed collections ](/en-US/docs/Web/JavaScript/Guide/Keyed_collections)
12. [ Working with objects ](/en-US/docs/Web/JavaScript/Guide/Working_with_objects)
13.... | |
Mmdn_built_in_objects/4usesofjavascriptsar_207_0.txt | [ Sign up ](https://www.digitalocean.com/community/newsletter) | |
Mmdn_built_in_objects/Mmdn_built_in_objects_96_2.txt | the constructor function that created the instance object.
Property attributes of ` Object.prototype.constructor `
---
Writable | yes
Enumerable | no
Configurable | yes
**Note:** This property is created by default on the [ ` prototype ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Func... | |
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Mmdn_built_in_objects/jsmapsasp_28_0.txt | ### Data Analytics | |
Mmdn_built_in_objects/Mmdn_built_in_objects_9_7.txt | est ](/en-US/docs/Glossary/Smoke_Test)
446. [ SMPTE (Society of Motion Picture and Television Engineers) ](/en-US/docs/Glossary/SMPTE)
447. [ SMTP ](/en-US/docs/Glossary/SMTP)
448. [ Snake case ](/en-US/docs/Glossary/Snake_case)
449. [ Snap positions ](/en-US/docs/Glossary/Snap_positions)
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Mmdn_built_in_objects/Mmdn_built_in_objects_4_4.txt | %2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FArray%2Fkeys%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-
us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Farray%2Fkeys%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2Fe01fd6206ce2fa... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_44_1.txt | ray.prototype.entries() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries)
6. [ ` Array.prototype.every() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every)
7. [ ` Array.prototype.fill() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill)
8. [ ` Array.pr... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_53_2.txt | l_Objects/Array/values)
43. _[ ` Array.prototype.with() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with) _
6. **Inheritance**
7. **[ ` Function ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) **
8. Constructor
1. [ ` Function() constructor ` ](/en-US/docs/Web/JavaScri... | |
Mmdn_built_in_objects/jsmapsasp_376_0.txt | // Create a Map
const fruits = new Map(); | |
Mmdn_built_in_objects/Mmdn_built_in_objects_82_2.txt | do take
parameters. For example, the [ ` Number.prototype.toString() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Number/toString) and [ `
BigInt.prototype.toString() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/BigInt/toString) methods take
an optional ` radix ` parameter.
### Return value
... | |
Mmdn_built_in_objects/4usesofjavascriptsar_121_0.txt | Output | |
Mmdn_built_in_objects/Mmdn_built_in_objects_26_5.txt | ntainer.
[ Read more â ](./scroll-progress-animations-in-css/) [ 
](./ai-explain-postmortem/)
## [ Reflections on AI Explain: A postmortem ](./ai-explain-postmortem/)
 | |
Mmdn_built_in_objects/jsmapsasp_160_0.txt | [ C ](/c/c_exercises.php "C Exercises") [ Exercise ](/c/c_exercises.php "C
Exercises") [ Quiz ](/c/c_quiz.php "C Quizzes") | |
Mmdn_built_in_objects/Mmdn_built_in_objects_29_6.txt | ing)
3. [ Styling our Angular app ](/en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/Angular_styling)
4. [ Creating an item component ](/en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/Angular_item_component)
5. [ Filtering our to-do items ](/en-US/docs/Learn/Tools_... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_29_2.txt | uilding_blocks/Fundamental_CSS_comprehension)
20. [ Creating fancy letterheaded paper ](/en-US/docs/Learn/CSS/Building_blocks/Creating_fancy_letterheaded_paper)
21. [ A cool-looking box ](/en-US/docs/Learn/CSS/Building_blocks/A_cool_looking_box)
10. Styling text
1. [ CSS styling text ](/en-US/docs/Learn/... | |
Mmdn_built_in_objects/4usesofjavascriptsar_99_0.txt | #### Tutorial | |
Mmdn_built_in_objects/Mmdn_built_in_objects_29_9.txt | ssessments for you to complete. These come in two main types:
* "Test your skills" tasks, for example in [ Making decisions in your code â conditionals ](/en-US/docs/Learn/JavaScript/Building_blocks/conditionals#test_your_skills!) .
* More in-depth **assessments** at the end of some modules, for example [ Image... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_60_17.txt | Element ` ](/en-US/docs/Web/API/SVGPolygonElement)
* [ ` SVGPolylineElement ` ](/en-US/docs/Web/API/SVGPolylineElement)
* [ ` SVGPreserveAspectRatio ` ](/en-US/docs/Web/API/SVGPreserveAspectRatio)
* [ ` SVGRadialGradientElement ` ](/en-US/docs/Web/API/SVGRadialGradientElement)
* [ ` SVGRect ` ](/en-US/docs/Web/... | |
Mmdn_built_in_objects/Mmdn_built_in_objects_35_8.txt | [ offset-path ](/en-US/docs/Web/CSS/offset-path)
5. [ offset-position ](/en-US/docs/Web/CSS/offset-position)
6. [ offset-rotate ](/en-US/docs/Web/CSS/offset-rotate)
67. [ opacity ](/en-US/docs/Web/CSS/opacity)
68. [ order ](/en-US/docs/Web/CSS/order)
69. [ orphans ](/en-US/docs/Web/CSS/orphans)
... | |
Mmdn_built_in_objects/jsmapsasp_298_0.txt | Read long term trends of browser usage | |
Mmdn_built_in_objects/jsmapsasp_307_0.txt | Use our color picker to find different RGB, HEX and HSL colors.  | |
Mmdn_built_in_objects/Mmdn_built_in_objects_87_17.txt | %3E
"This will take you to GitHub to file a new issue.")
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Mmdn_built_in_objects/Mmdn_built_in_objects_30_2.txt | CSS/Building_blocks/Fundamental_CSS_comprehension)
20. [ Creating fancy letterheaded paper ](/en-US/docs/Learn/CSS/Building_blocks/Creating_fancy_letterheaded_paper)
21. [ A cool-looking box ](/en-US/docs/Learn/CSS/Building_blocks/A_cool_looking_box)
10. Styling text
1. [ CSS styling text ](/en-US/docs/L... | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_13_2.txt | ross-site scripting (XSS) ](/en-US/docs/Glossary/Cross-site_scripting)
98. [ CRUD ](/en-US/docs/Glossary/CRUD)
99. [ Cryptanalysis ](/en-US/docs/Glossary/Cryptanalysis)
100. [ Cryptographic hash function ](/en-US/docs/Glossary/Cryptographic_hash_function)
101. [ Cryptography ](/en-US/docs/Glossary/Crypt... | |
Mmdn_built_in_objects/4usesofjavascriptsar_49_0.txt | * Our Community | |
Mmdn_built_in_objects/Mmdn_built_in_objects_106_4.txt | Fn(b, a) ` must both be ` 0 ` or have opposite signs.
* _Transitive_ : If ` compareFn(a, b) ` and ` compareFn(b, c) ` are both positive, zero, or negative, then ` compareFn(a, c) ` has the same positivity as the previous two.
A comparator conforming to the constraints above will always be able to return
all of ` 1... | |
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W3shools Spaces") | |
Mmdn_built_in_objects/jsmapsasp_368_0.txt | You can create a Map by passing an Array to the ` new Map() ` constructor: | |
Mmdn_built_in_objects/Mmdn_built_in_objects_87_14.txt | = "number");
console.log(i); // 5
The [ ` every() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Array/every) method returns `
true ` if ` callback ` returns ` true ` for every item in the array.
js
function isNumber(value) {
return typeof value === "number";
}
const a1... | |
Mmdn_built_in_objects/jsmapsasp_141_0.txt | [ Bootstrap 5 ](/bootstrap5/bootstrap_exercises.php "Bootstrap 5 Exercises") [
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Mmdn_built_in_objects/Mmdn_built_in_objects_22_5.txt | ere is no progress after a week of being assigned, ask them if they still have time to work on the issue. If another week passes by without any progress, unassign them and leave a comment indicating that you're making the issue available for other interested contributors.
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Mmdn_built_in_objects/Mmdn_built_in_objects_102_3.txt | per ](/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/developer)
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Mmdn_built_in_objects/jsmapsasp_114_0.txt | [ Learn Pandas ](/python/pandas/default.asp "Pandas Tutorial") [ Tutorial
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Mmdn_built_in_objects/Mmdn_built_in_objects_69_8.txt | if (Object.hasOwn(this, "-prop-value")) {
return this["-prop-value"];
} else {
// It doesn't look like one of my objects, so let's fall back on
// the default behavior by reproducing the current behavior as best we can.
// The apply behaves like "super" in some other languages.
... | |
Mmdn_built_in_objects/jsmapsasp_206_0.txt | ### Programs | |
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Mmdn_built_in_objects/Mmdn_built_in_objects_33_2.txt | .
* If ` displayName ` ends with a sequence of alphanumeric characters and ` _ ` followed by some ` / ` , ` . ` , or ` < ` , the sequence is returned without the trailing ` / ` , ` . ` , or ` < ` characters.
* If ` displayName ` ends with a sequence of alphanumeric characters and ` _ ` followed by ` (^) ` , the s... | |
Mmdn_built_in_objects/javascriptmapmethod_8_0.txt | In this article, we'll explore the ` map ` method's syntax and its wide array
of applications, ranging from basic data manipulation to advanced functional
programming paradigms. | |
Mmdn_built_in_objects/Mmdn_built_in_objects_7_1.txt | of these technologies, you need to know how to use them. Below
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## Documentation for Web developers
[ Web Developer Guide ](/en-US/docs/Web/Guide)
The Web Developer Guide provides useful how-to content to help you actually
use Web technologies to do what ... | |
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