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


var isSameNode = node.isSameNode(otherNode);


  • otherNode The Node to test against.


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.


<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>


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/>";



Specification Status Comment
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.
Obsolete Initial definition


Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? (Yes) 1.0 (1.7 or earlier)
Removed in 10 (10)
Readded in 48 (48)
? ? ?
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? (Yes) 1.0 (1.0)
Removed in 10.0 (10)
Readded in 48.0 (48)
? ? ?

See also

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Last updated by: rubyroobs,