Can you add tags to javascript?

This article mainly introduces whether javascript can add tags, the article is very detailed, has a certain reference value, interested friends must read it!

Javascript can add tags, method: 1, use the "document.createElement" statement to create a new tag node; 2, use the insertBefore () or appendChild () function to insert a new tag node before or after the specified child element node.

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

The insertion of a node can be divided into two cases: appending a child node to the element's child node list and inserting a child node in front of one of the element's child nodes:

The first case calls: element.appendChild (child node)

The second case calls: element.insertBefore (new node, existing node).

Example 1: append child nodes to the list of element child nodes

Coffee Tea clicks the button to add the item to the list

Click function myFunction () {var newItem = document.createElement ("LI") var textnode = document.createTextNode ("Water") newItem.appendChild (textnode) Var list = document.getElementById ("myList") list.insertBefore (newItem List.childNodes [0]) }

Note:

First create a li node

Then create a text node

Then add the text node in the li node.

Finally, insert the li node in the first child node list.

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