HTML DOM TreeWalker root property
Last Updated :
11 Jul, 2022
The TreeWalker root property returns the root node of the current TreeWalker. This is a read-only property.
Syntax:
rootNode = TreeWalker.root;
Return Value: This property returns the root node of the TreeWalker.
Example: In this example, we will learn how to get the rootNode of TreeWalker using this property. Here, rootNode is passed as a head node for parameter and it can be verified in console.
html
<!doctype html>
< html >
< head >
< meta charset="utf-8">
< title >HTML DOM TreeWalker root property</ title >
</ head >
< body >
< h1 >GeeksforGeeks</ h1 >
< p >Click Here to get the root node</ p >
< button onclick="get()">Click</ button >
</ body >
< script >
var treeWalker = document.createTreeWalker(document.head);
function get(){
node = treeWalker.root;
console.log(treeWalker)
console.log(node);
}
</ script >
</ html >
|
Output:
Before Button Click:
After Button Click:
Supported Browsers:
- Google Chrome 1
- Edge 12
- Firefox 4
- Safari 3
- Opera 9
- Internet Explorer 9
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