text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
to show some different information here. | 838.17 | 3.03 |
So let me first show what an
ordered list might look like, | 841.2 | 3.81 |
something that has numbers, 1, 2, 3. | 845.01 | 2.4 |
An ordered as an HTML tag is
just ol, ol for ordered list. | 847.41 | 5.79 |
So I can add a tag that says ol. | 853.2 | 3.06 |
And now inside of my ol element,
my ordered list element, | 856.26 | 3.72 |
I need a new element
for every list item. | 859.98 | 3.27 |
List item we're going to
abbreviate to just li. | 863.25 | 2.91 |
So the li tag in HTML
is what we're going | 866.16 | 2.49 |
to use to designate an item
inside of an HTML list. | 868.65 | 3.9 |
So here, for example, I could
say li and then first item. | 872.55 | 4.53 |
Then I could do the same
thing, li second item | 877.08 | 3.55 |
and then again li third item. | 880.63 | 3.32 |
So what I have here are some
elements and then elements | 883.95 | 2.36 |
nested within other elements. | 886.31 | 2.04 |
I have an ordered list
element inside of which | 888.35 | 2.37 |
are three other HTML elements,
three list items that | 890.72 | 3.45 |
are each indicating each of the
individual items that are inside | 894.17 | 4.08 |
of my HTML list. | 898.25 | 2.45 |
I can now open this up
by opening lists.html. | 900.7 | 4.65 |
And this is what I see. | 905.35 | 1.44 |
I see an ordered list,
where I have item number 1, | 906.79 | 2.49 |
first item, second item, third item. | 909.28 | 2.7 |
Note that I didn't actually
need to in the HTML anywhere | 911.98 | 3.06 |
specify the number 1, the
number 2, and the number 3. | 915.04 | 2.97 |
When my web browser reads
this should be an order list, | 918.01 | 2.7 |
my web browser, Chrome in this case,
just adds those numbers in for me | 920.71 | 3.51 |
because it knows what
an ordered list means | 924.22 | 2.16 |
and it knows how to take the HTML that
I've written and display it in the way | 926.38 | 3.96 |
that I intend to the user. | 930.34 | 3.24 |
Now, in addition to ordered list
that all have numbers, 1, 2, 3, | 933.58 | 3.81 |
we also have unordered
lists that are just bullet | 937.39 | 2.28 |
points, bullet points of information. | 939.67 | 2.01 |
So I could, up above, add some
more content to this HTML page. | 941.68 | 4.32 |
I can say here is an unordered list. | 946 | 3.82 |
And just as an ordered
list we represented | 949.82 | 2.36 |
using the ol tag in HTML, ol
standing for ordered list, | 952.18 | 4.8 |
likewise we can use the
ul tag in HTML to create | 956.98 | 4.11 |
an unordered list, u for unordered. | 961.09 | 3.24 |
So here, we're going to add a ul tag. | 964.33 | 1.79 |
And again, my text editor
here is automatically | 966.12 | 1.96 |
adding the closing tag
here, this slash ul, | 968.08 | 2.52 |
meaning the end of the unordered list. | 970.6 | 1.89 |
And many text editors will do this
now just so you, the programmer, | 972.49 | 2.97 |
don't forget to add that. | 975.46 | 2.28 |
And now inside of this
unordered list, we're | 977.74 | 1.98 |
again going to have some list items. | 979.72 | 1.98 |
Also, using the li
tag, here is one item. | 981.7 | 3.55 |
And here is another item. | 985.25 | 2.34 |
And here is yet another item. | 987.59 | 4.16 |
If I go ahead and refresh the
page now, I'm still on list.html, | 991.75 | 3.39 |
I now see that on top
of my ordered list, | 995.14 | 2.25 |
I have an unordered list, where
each item instead of being numbered | 997.39 | 3.06 |
1, 2, 3, is instead labeled with just
bullet point, bullet point, bullet | 1,000.45 | 3.99 |
point, where each of these bullet
points and each of these numbered items | 1,004.44 | 3.36 |
is a list item element, or an li. | 1,007.8 | 3.65 |
So hopefully now we can
see that as we start | 1,011.45 | 1.84 |
to explore these various different
HTML tags and nesting HTML tags inside | 1,013.29 | 4.86 |
of one another, we're able to
create more and more interesting | 1,018.15 | 3.42 |
web pages as a result. | 1,021.57 | 2.38 |
So let's explore now what
other types of web pages | 1,023.95 | 2.64 |
we can create using other
types of HTML elements. | 1,026.59 | 3.47 |
In addition to lists, one
thing you might imagine | 1,030.06 | 2.37 |
is that one of the
important things on the web | 1,032.43 | 1.92 |
is not just displaying text, but
also displaying other types of media, | 1,034.35 | 3.43 |
like images, for example. | 1,037.78 | 1.47 |
So how might we go about doing that? | 1,039.25 | 2.53 |
Well, I can, for example-- | 1,041.78 | 1.52 |
let's go back into my text editor. | 1,043.3 | 2.94 |
Let me create a new file
that I'm going to call | 1,046.24 | 2.12 |
image.html, which is going to contain
some code for displaying some images. | 1,048.36 | 5.35 |
I'll go ahead and go into hello.html
and copy this text into the page, | 1,053.71 | 4.24 |
again, change the title to Image. | 1,057.95 | 2.1 |
And now, inside of the body, I'm
going to add a new tag called image. | 1,060.05 | 5.29 |
And the image tag has a
couple of required attributes. | 1,065.34 | 2.97 |
Remember that attributes are what
we saw before things, like adding | 1,068.31 | 2.8 |
a lang equals en to the top of my
page to indicate that this web page is | 1,071.11 | 4.89 |
written in English, for example. | 1,076 | 2.34 |
And the image tag has a couple of
required attributes that I need to add. | 1,078.34 | 4.59 |
In particular, when I
display an image on the page, | 1,082.93 | 2.79 |
I need to specify what image I
actually want displayed, for example. | 1,085.72 | 4.19 |
So I might specify image
src, short for source, | 1,089.91 | 4.8 |
is going to be equal to what image do I
actually want to display on this page. | 1,094.71 | 5.2 |
And it just so happens that inside
of my folder where I have image.html, | 1,099.91 | 3.87 |
I have an image called cat.jpeg. | 1,103.78 | 2.96 |
So I'm just going to specify cat.jpeg
as the file name of the image | 1,106.74 | 4.24 |
that I want to display. | 1,110.98 | 2.06 |
And it turns out that images also
have a second required attribute. | 1,113.04 | 3.94 |
In addition to the file name or the link
to whatever image I want to display, | 1,116.98 | 4.41 |
I also need to provide some alternative
text, a text-based representation | 1,121.39 | 4.9 |
of what you're going to see on
the image because in some cases, | 1,126.29 | 2.63 |
some web browser might not be able
to render the image correctly. | 1,128.92 | 3.21 |
You might imagine if there's
some error rendering the image, | 1,132.13 | 2.55 |
or if someone's on a
slow internet connection, | 1,134.68 | 1.91 |
or if someone's using a screen
reader and therefore can't actually | 1,136.59 | 2.75 |
see the image. | 1,139.34 | 0.71 |
We want some text-based
representation of that image as well. | 1,140.05 | 3.94 |
And so I'll provide some Alt
text, some alternative text, that | 1,143.99 | 3.23 |
can be used to substitute the
image in case for some reason | 1,147.22 | 2.79 |
we can't display the image. | 1,150.01 | 1.56 |
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