Introduction to htmldoctype _ HTML/Xhtml _ webpage Creation

Htmldoctype tells the browser what html or xhtml specifications are used to parse html documents. The following is a detailed introduction and I hope it will help you. The document mode has the following functions:

1. Tell the browser what html or xhtml specifications are used to parse html documents

2. It has an impact on the rendering mode of the browser. Different rendering modes will affect the parsing of CSS code and even JavaScript scripts by the browser. Therefore, Doctype is critical, especially in IE browsers, the rendering mode of HTML pages determined by DOCTYPE is crucial.

Two rendering modes:

BackCompat: The standard compatibility mode is not enabled (or the Quirks mode or hybrid mode)
CSS1Compat: The standard compatibility mode is enabled (or the Strict mode [Standards mode/Strict mode]).