Node.isSameNode

The Node.isSameNode() method tests whether two nodes are the same, that is if they reference the same object.

Syntax

var isSameNode = node.isSameNode(other);

Parameters

• other The Node to test against.

Example

In this example, we create three <div> blocks. The first and third have the same contents and attributes, while the second is different. Then we run some JavaScript to compare the nodes using isSameNode() and output the results.

HTML

<div>This is the first element.</div>
<div>This is the second element.</div>
<div>This is the first element.</div>

<p id="output"></p>

JavaScript

let output = document.getElementById("output");
let divList  = document.getElementsByTagName("div");

output.innerHTML += "div 0 same as div 0: " + divList[0].isSameNode(divList[0]) + "<br/>";
output.innerHTML += "div 0 same as div 1: " + divList[0].isSameNode(divList[1]) + "<br/>";
output.innerHTML += "div 0 same as div 2: " + divList[0].isSameNode(divList[2]) + "<br/>";

Results

Specifications

Specification	Status	Comment
DOM The definition of 'Node' in that specification.	Living Standard	No change (was for a long time removed from it).
Document Object Model (DOM) Level 3 Core Specification The definition of 'Node.isSameNode()' in that specification.	Recommendation	Initial definition

Browser compatibility

See also

• Node.isEqualNode()