HTML DOM setAttributeNode() Method
Example
Set the class attribute node of a <h1> element:
var h1 = document.getElementsByTagName("H1")[0]; // Get the first <h1> element in the document
var att = document.createAttribute("class"); // Create a "class" attribute
att.value = "democlass"; // Set the value of the class attribute
h1.setAttributeNode(att); // Add the class attribute to <h1>
Before setting the attribute node:
Hello World
After setting the attribute node:
Hello World
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More "Try it Yourself" examples below.
Definition and Usage
The setAttributeNode() method adds the specified attribute node to an element.
If the specified attribute already exists, this method replaces it.
The return value of this method is an Attr object. For more information, see The HTML DOM Attribute Object.
See also the setAttribute() method.
Tip: Use the removeAttributeNode() method to remove an attribute node from an element.
Browser Support
| Method | |||||
|---|---|---|---|---|---|
| setAttributeNode() | Yes | Yes | Yes | Yes | Yes |
Syntax
element.setAttributeNode(attributenode)
Parameter Values
| Parameter | Type | Description |
|---|---|---|
| attributenode | Attr object | Required. The attribute node you want to add |
Technical Details
| Return Value: | An Attr object, representing the replaced attribute node, if any, otherwise null |
|---|---|
| DOM Version | Core Level 1 Element Object |
More Examples
Example
Set the href attribute node of a <a> element:
var anchor = document.getElementById("myAnchor"); // Get the <a> element with id="myAnchor"
var att = document.createAttribute("href"); // Create a "href" attribute
att.value = "https://www.w3schools.com"; // Set the value of the href attribute
anchor.setAttributeNode(att); // Add the href attribute to <a>
Before setting the attribute node:
Go to w3schools.com
After setting the attribute node:
Try it Yourself »Related Pages
HTML Tutorial: HTML Attributes
HTML DOM Reference: The HTML DOM Attribute Object
HTML DOM Reference: setAttribute() Method
HTML DOM Reference: document.createAttribute() Method
HTML DOM Reference: attribute.value Property
HTML DOM Reference: getAttributeNode() Method
HTML DOM Reference: removeAttributeNode() Method
