Shulou(Shulou.com)06/01 Report--

This article mainly introduces "what is the role of HTML". In daily operation, I believe that many people have doubts about the role of HTML. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what is the role of HTML?" Next, please follow the editor to study!

The question may often be asked during an interview: why add a line at the top of the page?

Before explaining the reason, let's first understand one word: document.compatMode, which is literally translated into Chinese: the parsing type of the document.

Browsers usually have two modes when parsing XHTML and HTML:

BackCompat: weird mode. Browsers use their own weird mode to parse rendered pages. CSS1Compat: standard mode, browsers use W3C standards to parse rendered pages.

This property will be recognized and used by the browser, but if your page does not have a DOCTYPE declaration, then compatMode defaults to BackCompat, and the browser parses the rendered page in its own way, and different styles will be displayed in different browsers.

If your page is added, it is tantamount to turning on standard mode, and the browser will have to honestly parse and render the page according to the W3C standard, so that your page will look the same in all browsers.

This is what you add at the top of the page.

At this point, the study of "what is the role of HTML" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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