" node. The "" tag tells the browser that this is an HTML document. It is the outermost element in the HTML document, the root element. The html tag is a container for all other HTML elements except the "" tag."/> " node. The "" tag tells the browser that this is an HTML document. It is the outermost element in the HTML document, the root element. The html tag is a container for all other HTML elements except the "" tag.">

Home  >  Article  >  Web Front-end  >  What is the html root node?

What is the html root node?

青灯夜游
青灯夜游Original
2021-06-15 15:43:107444browse

htmlThe root node is the "" node. The "" tag tells the browser that this is an HTML document. It is the outermost element in the HTML document, that is, the root element. The html tag is a container for all other HTML elements except the "" tag.

What is the html root node?

The operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.

htmlThe root node is the "" node.

HTML DOM Node Tree

HTML DOM treats HTML documents as a tree structure. This structure is called a node tree:

What is the html root node?

Default HTML snippet

<html>
  <head>
    <title>DOM节点</title>
  </head>
  <body>
    <h1>DOM节点</h1>
    <p>Hello world!</p>
  </body>
</html>

From the HTML above:

# The
  • ## node has no parent node; it is the root node. The

    # tag tells the browser that this is an HTML document. The tag is the outermost element in an HTML document. The tag is a container for all other HTML elements (except the tag).

  • The parent node of and is the node

  • The text node "Hello world!" The parent node is the

    node

and:

  • The node has two child nodes: and < ;body>

  • node has one child node: node<p></p>
  • node also has one Child node: Text node "DOM Tutorial"<p></p>
  • and

    nodes are sibling nodes and are also child nodes of

And:

  • element is the first child node of the element

  • element

  • ##

    The element is the first child node of the element

  • element is the last child node of the

    element
  • Recommended tutorial: "
html video tutorial

"

The above is the detailed content of What is the html root node?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article:What are the html events?Next article:What are the html events?