text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
going to be associated with
a list called countries. | 2,081.55 | 4.32 |
Then immediately below that I
have a data list element whose | 2,085.87 | 3.53 |
ID is countries, where here,
I'm going to specify these | 2,089.4 | 3.25 |
are all of the options for
what country we could have. | 2,092.65 | 3.15 |
Each one is inside of an
option element whose value | 2,095.8 | 2.87 |
is whatever country they could select. | 2,098.67 | 2.35 |
And we have all of the countries of the
world listed in these option elements. | 2,101.02 | 5.11 |
So this input here is going to allow me
to select one option from a list of all | 2,106.13 | 4.79 |
of these possible options. | 2,110.92 | 1.96 |
So now, if I open up form1.html. | 2,112.88 | 4.21 |
Here's what that form
ultimately looks like. | 2,117.09 | 2.69 |
I can, here, inside of the name field-- | 2,119.78 | 1.95 |
again, that word name shows up,
because it's the placeholder-- | 2,121.73 | 3.03 |
I can type in my name here. | 2,124.76 | 1.83 |
And inside of the password
field anything I type | 2,126.59 | 2.67 |
is going to show up as
just little dots instead | 2,129.26 | 2.4 |
of the actual characters, because the
type of that input field was password, | 2,131.66 | 4.23 |
instead of the type being text. | 2,135.89 | 2.55 |
In favorite color, I
now have the ability | 2,138.44 | 1.98 |
to choose between various
different favorite color options. | 2,140.42 | 2.97 |
In a radio button format, I choose
from one of a number of options. | 2,143.39 | 3.33 |
And finally, inside
this country dropdown, | 2,146.72 | 2.82 |
I have the ability now when I click
on it to see all of the countries, | 2,149.54 | 3.61 |
but as I start to type
letters, like u-n-i-t, | 2,153.15 | 3.32 |
it filters down to only the
options that I actually care about. | 2,156.47 | 3.76 |
So here if I type in enough letters,
eventually I see United States. | 2,160.23 | 3.86 |
And I can click on that option as well. | 2,164.09 | 2.65 |
So HTML5 builds in these
additional features | 2,166.74 | 3.14 |
to make it easy to implement something
like a text field, where it will auto | 2,169.88 | 3.42 |
complete based on the
text that you provide. | 2,173.3 | 2.22 |
You can just specify that it
is inside of this data list | 2,175.52 | 4.2 |
and then provide a list of
all the possible values. | 2,179.72 | 2.43 |
And then HTML and your
web browser in turn | 2,182.15 | 2.58 |
will take care of the process of
rendering that information in the way | 2,184.73 | 3.15 |
that you expect it to be displayed. | 2,187.88 | 3.78 |
So those are just some of
the possible HTML elements | 2,191.66 | 2.6 |
that we can ultimately create by
using these various different elements | 2,194.26 | 3.69 |
that we nest within each other. | 2,197.95 | 1.52 |
And there are definitely
other HTML elements | 2,199.47 | 2.02 |
that exist as well that
you can begin to explore. | 2,201.49 | 2.61 |
But all of them follow
a very similar pattern | 2,204.1 | 2.17 |
that we're going to have
some tag, that might require | 2,206.27 | 2.21 |
some attributes, additional
information about the HTML, | 2,208.48 | 3.3 |
to give context to the web browser for
how that element should be displayed. | 2,211.78 | 3.93 |
Maybe that element needs to have
a particular source for an image. | 2,215.71 | 3.12 |
Maybe it needs a link in order to link
to somewhere, or other information | 2,218.83 | 3.15 |
as well. | 2,221.98 | 0.78 |
And then inside of that element,
you might nest other elements. | 2,222.76 | 2.7 |
So that your table has rows. | 2,225.46 | 1.86 |
And inside of those rows,
we have other cells. | 2,227.32 | 2.16 |
And you might imagine
nesting elements inside | 2,229.48 | 2.55 |
of other elements inside
of other elements. | 2,232.03 | 2.83 |
But right now so far, all of our
web pages have been rather simple. | 2,234.86 | 3.7 |
They've just been-- we've described
the structure of the page, | 2,238.56 | 2.59 |
and we've described we want a
list here, we want to form there. | 2,241.15 | 3.02 |
What we might really like is
some way of specifying that we | 2,244.17 | 2.89 |
want to style our web page in some way. | 2,247.06 | 2.28 |
We want to add color. | 2,249.34 | 0.93 |
We want add spacing. | 2,250.27 | 1.26 |
We want to add some sort of
other layout to our page as well. | 2,251.53 | 3.48 |
And in order to do that, we're
going to use a second language | 2,255.01 | 2.97 |
that we're going to call CSS,
short for Cascading Style Sheets. | 2,257.98 | 3.48 |
In particular, we'll
use the latest version | 2,261.46 | 1.8 |
of CSS, CSS3, which gives us
the ability to take an HTML page | 2,263.26 | 5.1 |
and tell the web browser how
we would like it to be styled. | 2,268.36 | 3.06 |
Instead of just black text in the
same font on a white background, | 2,271.42 | 3.48 |
we can begin to specify
particular CSS properties of how | 2,274.9 | 4.2 |
we would like this page to look
to make sure that the page looks | 2,279.1 | 3.15 |
the way we want it to. | 2,282.25 | 1.71 |
So let's take a look at a
simple example now of CSS | 2,283.96 | 3.57 |
to take a look at how we can
add some CSS code to our page. | 2,287.53 | 5.27 |
So I'll go ahead and create a new
file that I'll call style.html, | 2,292.8 | 5.58 |
just to demonstrate some basic ideas
of adding some style to our page. | 2,298.38 | 3.99 |
And we'll go ahead and copy the
same hello.html from before. | 2,302.37 | 3.96 |
And maybe in addition to hello world,
I display in h1 some big heading | 2,306.33 | 4.02 |
at the top that says like, Welcome
to my web page, for example. | 2,310.35 | 5.44 |
So now, if I open up,
style.html, this is what I see. | 2,315.79 | 4.38 |
I see a big heading at the top
that says welcome to my web page, | 2,320.17 | 2.85 |
beneath which is just
the text, hello world. | 2,323.02 | 3.32 |
And now imagine that I
want to add some style | 2,326.34 | 2.37 |
to this heading at the top of the page. | 2,328.71 | 2.16 |
Maybe instead of being left
aligned, I want it to be centered. | 2,330.87 | 2.64 |
Maybe instead of just being black
text, I'd like to change the color. | 2,333.51 | 3.27 |
In order to do that, just
as we've used attributes | 2,336.78 | 3.24 |
in the past to add additional
information to this particular HTML | 2,340.02 | 4.26 |
page, we can do a very
similar thing with CSS. | 2,344.28 | 3.42 |
We can specify that we're going to
give this h1 element a style attribute. | 2,347.7 | 5.24 |
And that is going to be equal to. | 2,352.94 | 1.54 |
And then in quotation marks, we're going
to provide all of the CSS properties | 2,354.48 | 4.59 |
that we would like to add
to this particular element. | 2,359.07 | 2.97 |
So the way that CSS styling works
is that we can give elements | 2,362.04 | 3.78 |
individual CSS properties,
where a property is | 2,365.82 | 2.97 |
something like the color of the element
or the alignment of the element. | 2,368.79 | 3.8 |
And each of those properties
has a default value. | 2,372.59 | 2.53 |
But we can change its
value to something else. | 2,375.12 | 2.73 |
So if, for example, I wanted to
change the color of this heading, | 2,377.85 | 3.78 |
so that instead of a black heading,
it displayed as the blue heading, | 2,381.63 | 3.42 |
I could say for this h1, I would
like to give it a color property. | 2,385.05 | 4.59 |
And then to give the
color property of value, | 2,389.64 | 2.25 |
I say color colon and then the value
that I would like to give to it. | 2,391.89 | 3.78 |
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