How javascript replaces page elements

This article focuses on "how to replace page elements with javascript". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to replace page elements with javascript.

In javascript, you can replace page elements with the replaceChild () method, which replaces a child node with a new node, with the syntax "parent node .replaceChild (new node, old node to be replaced)".

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

In javascript, you can use the replaceChild () method to replace page elements.

The replaceChild () method replaces a child node with a new node. This new node can be an existing node in the document, or you can create a new node.

Syntax:

Node.replaceChild (newnode,oldnode) parameter type description newnodeNode object is required. The node object you want to insert. OldnodeNode object is required. The node object you want to delete.

Example:

JavaScript is a commonly used technique to add dynamic effects to web pages.