What is the function of html tag semantics and rendering efficiency? Seo crawler? Want to know the principle of a depth! Thank

  html5, question

What is the function of html tag semantics and rendering efficiency? Seo crawler? Want to know the principle of a depth! Thank

It’s an interesting question.

Why Semantic?

  1. In order to present a good content structure and code structure without CSS. In order to look good when running naked. Because each browser is not standard fordomFault tolerance is different.

  2. User experience: for exampletitle、altIt is used to explain nouns or picture information and the use of label labels.

  3. It is conducive to SEO: establish good communication with search engines and help crawlers to capture more effective information: crawlers rely on tags to determine the context and weight of each keyword;

  4. It is convenient for other devices (such as screen readers, blind readers and mobile devices) to render web pages in a meaningful way. Teams that follow World Wide Web Consortium follow this standard, which can reduce differentiation.

Rendering efficiency:

This is really difficult to say, but we can guess, to make a metaphor, to give you a book with a catalog is easy to look up or a book without a catalog? ? Obviously, after SemanticdomMore standardized, so rendering will be more efficient, for example, there will be a lot of processing fault tolerance left.domThe time

Recommended links:Innovation of HTML 5-Semantic Label

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