January 2018
Intermediate to advanced
678 pages
20h 16m
English
Content preview from Web Programming with HTML5, CSS, and JavaScript
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1.13 Differences Between Old HTML and HTML5
In the real world, you’ll see a lot of old HTML code. The old code you’ll see the most of will probably be XHTML 1.0 because it was the most popular precursor to HTML5. When you see that code, there’s no need to be alarmed; today’s browsers render XHTML 1.0 code just fine. But in the interest of long-term stability and following your company’s coding conventions, you’ll sometimes need to convert old HTML code to HTML5. To do so, you need to know the differences between old HTML code and HTML5.
The following differences address the issue of existing web pages that don’t match XHTML 1.0’s strict syntax. More specifically, the following differences show how HTML5 has loosened up some of its syntax rules ...
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