What is the difference between HTML5 and other HTML?

HTML5， It is what we usually call H5. Now H5 is so popular that non-technical people mistakenly think H5 is a new language.

In fact, HTML5 is only the fifth version of HTML, just as iPhone x is a version of iPhone.

The reason why H5 has been mentioned a lot in recent years is that this version has deleted and modified many elements, making HTML a new "upgrade". Just like the iPhone added face brushes and Siri.

What is the difference between HTML5 and other versions of HTML? The main differences are as follows:

1、 Document declaration difference

The type declaration of the HTML document is:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" " http://www.w3.org/TR/html4/strict.dtd ">

//Or<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd ">

HTML5 document type declaration is:

<! DOCTYPE html>

Document statement HTML5 is easy to write, concise, and conducive to rapid reading and development by programmers.

We can identify whether the page is HTML5 by viewing the statement of the web page source code.

2、 Structural semantic differences

Html: tags that do not reflect structural semantics, such as<div id="nav"></div>

Html5: Added many semantic tags, such as:<article>,<aside>,<audio>,<bdi>

Compared with the previous version of HTML, HTML5 has added and modified some elements.

3、 Syntax processing

HTML cannot handle inaccurate syntax; HTML5 can handle inaccurate syntax.

4、 More powerful drawing function

HTML: refers to scalable vector graphics, which is used to define vector based graphics of the network.

HTML5: The canvas element of HTML5 uses script (usually JavaScript) to draw an image on a web page, which can control every pixel of the canvas.

5、 Audio and video support

If HTML does not use Flash player support, it does not support audio and video. HTML5 uses<audio>and<video>tags to support audio and video control.

Recommended reading:

Advantages of using HTML5 to build a website