All language subtitles for 017 A Note on Semantic HTML.en_US

So I mentioned the term semantic HTML a couple of times

in this section.

And so let's now actually very quickly define what I

actually mean by semantic HTML.

So in HTML, when we talk about semantics,

what we mean is that certain elements have actually

a meaning or a purpose attached to them.

So when we think about a certain HTML element,

we should actually not think about what that element looks

like as it's rendered on the page.

But instead we should think about what that element

actually means and what it stands for.

So that is basically the definition of semantic HTML.

Now, not all elements in HTML are semantic.

And actually I talked a little bit about that before

here in this element. So the strong element,

which makes our element look bold here on the page.

So remember how previously I used the B element,

which simply turns its content bold,

but doesn't attach it any meaning. Right?

So I explained that before.

And so now maybe it makes a bit more sense.

So again, by using the strong element here,

the text will still look bold here in the browser,

but what really matters here is that we now assign some

meaning to this content here.

We now say that is a strong content,

which means basically a very important piece of content and

the same here for this piece. So this fundamental word here.

So again, we use EM for emphasizing this.

And so it still looks atelic here on the webpage,

but what we really mean is that we emphasized this word

here. So we gave it a special emphasis and yeah,

that's what this element here right now means.

Okay, and the same is actually true for

all of these elements that we used in the last video.

So for example here, this navigation element,

all this does is to create a box,

remember which then contains these four anchor elements,

but visually it doesn't really do anything.

All this does is to represent as a meaning

that this is a navigation, but instead of using nav,

we could also have used a more generic element,

which is the div element.

So for example, div open and close it here, and again,

visually nothing will change.

And so all this did was to create a new box,

but the box without any meaning.

So that's what div stands for.

So back in the day before HTML five,

we always use divs for every single box that we needed

like this on the page,

but then HTML five came around and introduced this concept

of semantic HTML.

And so now we should only use the div element when we don't

want to attach a certain meaning to a certain container.

So to a certain like box element on our page.

So in this case,

we really want this to mean that it's a navigation.

And so we use the navigation element for that.

Okay. And the same is true for the article, the header,

the footer that we have down here.

And in fact it is true even for the paragraph,

for example, because all that,

this paragraph here and all the other paragraphs really are,

are essentially boxes filled with text.

Now the P of course does have a semantic meaning.

It means that it is a paragraph,

but we could again use a generic box without any meaning.

So the div and nothing would change visually.

Okay. Actually something did change here.

So we lost some of the white space that

we do have around the P.

All right, so let's put it back here anyway

to the P because we want it to have some meaning.

And of course we also want the spacing that's the browser

gives us by default around the P elements.

Now okay, but the idea that I mentioned still holds

because we could very easily recreate this space here

using some CSS later.

So if we wanted,

we could in fact build the entire webpage only out of div

elements if we wanted and

then use CSS to style them as we want.

But of course we don't do that.

We use semantic HTML to give four elements meaning.

Now you might ask why we actually do that

and there are multiple reasons.

And I think I mentioned them already, actually.

So one of them is a search engine optimization,

which basically means that a search engine such as Google

will be able to understand the structure of your content.

And therefore they will be better able to analyze

what your content and what your webpage is all about.

Also writing semantic HTML is extremely important for

accessibility and especially for people

who rely on screen readers to consume on web pages.

Okay, so I hope that this makes sense,

and we will also keep touching on the subject

as we go through the rest of the course,

but I still wanted to make it very clear from the very

beginning that when we think about HTML,

we should not only think about how it actually looks like

in the browser,

but even more about what these elements actually mean

and what they stand for.

And with that being said,

we kind of finished all we had to learn in this section.

And so in the next video,

we will configure vs code a little bit more,

and then we will move on to two final challenges

in the section.

So don't wait and let's move on to the next lecture here.