Datasets:
pre-view
/
CS50-raw

Dataset card Data Studio Files
xet
 Community
1
text
stringlengths
1
81
start
float64
0
10.1k
duration
float64
0
24.9
common JavaScript code that's in use by
2,326.68
5.04
multiple different HTML pages multiple
2,329.2
4.68
HTML pages can all include the same
2,331.72
4.23
JavaScript source rather than needing to
2,333.88
2.76
repeat myself
2,335.95
2.669
use the same JavaScript across multiple
2,336.64
4.02
different pages I can just use the same
2,338.619
3.841
JavaScript across all of them and
2,340.66
3.78
that'll be helpful too as we begin to
2,342.46
3.45
take a look later at some JavaScript
2,344.44
3.27
libraries which are JavaScript written
2,345.91
4.05
by other people we can just include
2,347.71
4.109
other people's JavaScript in our own
2,349.96
4.349
webpages just by adding a script tag at
2,351.819
4.23
the top of our page that specifies a
2,354.309
3.181
particular source you may have already
2,356.049
3.601
interacted with bootstrap that has its
2,357.49
4.17
own JavaScript code and you can include
2,359.65
4.139
bootstraps JavaScript just by including
2,361.66
4.86
a script tag at the top of our HTML page
2,363.789
5.131
in order to say go ahead and include all
2,366.52
6.23
of that javascript in our page as well
2,368.92
6.51
so what else can we do now now that we
2,372.75
4.539
have the ability to like get at elements
2,375.43
3.84
of the Dom and actually manipulate their
2,377.289
4.141
contents well one thing we can do is
2,379.27
4.47
begin to make our pages a little bit
2,381.43
3.929
more interactive actually respond to
2,383.74
4.049
what users are doing on the page whether
2,385.359
4.68
the user is typing something in or maybe
2,387.789
4.381
filling out a form for example so let's
2,390.039
3.721
go ahead and try an example of that
2,392.17
3.09
where the user might be filling out a
2,393.76
3.51
form and we would like for our code to
2,395.26
4.109
somehow respond to what it is that they
2,397.27
4.11
type I'll go ahead and go back into
2,399.369
6.42
hello dot HTML and now inside of the
2,401.38
6.479
body of the page I've said hello at the
2,405.789
3.99
top I'm here instead of a button I'm
2,407.859
5.46
going to have a form this HTML form will
2,409.779
4.83
look like the HTML forms we've seen
2,413.319
3.871
before a have an input field that'll add
2,414.609
4.531
the auto focus attribute to to mean like
2,417.19
3.24
automatically focus this input field
2,419.14
3.179
when I open the page because I might
2,420.43
2.189
want
2,422.319
2.911
user to start typing right away I'm
2,422.619
4.67
gonna give this input field an ID of
2,425.23
5.789
name for example and then a placeholder
2,427.289
9.641
of name capital n whose type is text so
2,431.019
7.201
what have I done here I've created an
2,436.93
2.76
input field where the user can type in
2,438.22
3.51
some text the placeholder the thing the
2,439.69
4.02
user see is filled into that input field
2,441.73
4.26
originally will just be capital and name
2,443.71
3.69
telling them they should type their name
2,445.99
3.869
in here and I've given this input field
2,447.4
6.09
an ID some unique identifier such that I
2,449.859
6.361
later on can reference and find this
2,453.49
5.67
particular input field and then I have
2,456.22
5.97
input type equals submit some way for me
2,459.16
7.439
to now submit this form as well and so
2,462.19
7.579
if I load this page load hello dot HTML
2,466.599
6.27
here's what I see hello a field where I
2,469.769
4.75
can type in my name the placeholder name
2,472.869
3.301
shows up there for me and then a button
2,474.519
5.52
where I can submit this form and now
2,476.17
5.55
what I'd like to do inside of my
2,480.039
3.75
JavaScript is instead of this hello
2,481.72
3.779
function what I'm going to do is I'm
2,483.789
4.23
going to first run some JavaScript when
2,485.499
4.171
the Dom is done loading and so I'll use
2,488.019
2.941
that same line from before you're gonna
2,489.67
2.97
see it quite a bit we're gonna say
2,490.96
4.529
document add event listener Dom content
2,492.64
5.669
loaded and then this function to mean go
2,495.489
4.86
ahead and run this code when the Dom is
2,498.309
4.171
done loaded and the code I'd like to run
2,500.349
6.69
is to say when I submit the form I want
2,502.48
6.089
something to happen when I submit the
2,507.039
3.06
form maybe I want to display an alert
2,508.569
3.601
that if I type in Brian it'll say hello
2,510.099
3.541
Brian or if I typed in David it'll say
2,512.17
3.72
hello David for example so how many I do
2,513.64
4.74
that well how do I get the form that's
2,515.89
3.99
the first question anytime you want to
2,518.38
3.659
get at an element one particular element
2,519.88
4.619
on an HTML page usually what we're going
2,522.039
5.641
to do is document dot query selector to
2,524.499
5.55
say get me the element that is a form
2,527.68
3.99
and there's only one form on the page so
2,530.049
3.06
I don't have to worry about ambiguity
2,531.67
3.56
I'm just saying get me that form and
2,533.109
6.24
then I can say dot on submit when you
2,535.23
6.849
submit the form what code should run and
2,539.349
4.561
if I had a name of a function like a
2,542.079
4.051
function f I could just say like run
2,543.91
4.369
function f when the form is submitted
2,546.13
5.28
but alternatively just as before instead
2,548.279
4.631
of providing the name of a function I
2,551.41
3.57