Summary of addition, query, modification, and deletion of the DOM tree in js

This article is my own summary of DOM tree operations. It mainly lists the methods and has little about the principles. It is suitable for you to clarify your ideas or review the addition, query, modification, and deletion Summary of DOM trees.

Abstract: operations on html dom are essential skills for front-end JavaScript programming. This article is my own summary of DOM tree operations. It mainly involves listing methods and rarely describing principles, suitable for you to clarify your ideas or review

1. What is html dom?

It is a W3C standard, a standard HTML object model, and a programming interface for accessing HTML. All in all, it is the standard that allows us to operate on HTML elements.

Ii. operations on the DOM tree

I like to display the method in the form of a logical diagram, which is clearer and clearer, as shown in the figure below:

3. DOM2 and DOM3

DOM2 and DOM3 mainly extend DOM APIs, such as Operation-style APIs and traversal. Make the operation easier.

The above is the details of adding, querying, modifying, and deleting the DOM tree in js. For more information, see other related articles in the first PHP community!