What is the meaning of dom in html5
This article will explain in detail what dom means in html5. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.
Dom in html5 is the abbreviation of "Document Object Model", which means document object model. It defines a standard way to access and manipulate html documents for an API;dom of HTML and XML documents. Through dom, you can dynamically add, remove, and modify parts of the page.
This article operating environment: Windows10 system, html5 version, Dell G3 computer.
What is dom in html5
DOM is the document object Model (Document Object Model), which defines a standard way to access and manipulate HTML documents.
With DOM, developers can dynamically add, remove, and modify parts of the page.
DOM (document object Model) is an API for HTML and XML documents, which can be changed through DOM.
DOM expresses the HTML document as a tree structure, as follows:
This statement is very official, and people must still not understand it.
For example: we have a HTML, so how do we access the first node on the second layer, and how do we move the last node to the first node?
DOM is the standard that defines what to do if you do something like this. For example, use getElementById to access the node and use insertBefore to insert the node.
When the browser loads HTML, the corresponding DOM tree is generated.
In short, DOM can be understood as an implementation standard for accessing or manipulating various HTML tags.
With DOM, developers can dynamically add, remove, and modify parts of the page.
Because the HTML document is parsed by the browser as a DOM tree, in order to change the structure of the HTML, we need to operate the DOM through JavaScript.
Always remember that DOM is a tree structure. There are actually a few operations to manipulate a DOM node:
Update: update the contents of the DOM node, which is equivalent to updating the contents of the HTML represented by the DOM node
Traversal: traverses the child nodes under this DOM node for further operations
Add: add a new child node under the DOM node, which is equivalent to dynamically adding a HTML node
Delete: deleting this node from the HTML is equivalent to deleting the contents of the DOM node and all the child nodes it contains.
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