Syntax

isSameNode(otherNode)

Parameters

otherNode

The Node to test against.

Note: This parameter is not optional, but can be set to null.

Return value

A boolean value that is true if both nodes are strictly equal, false if not.

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

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>

#output {
  width: 440px;
  border: 2px solid black;
  border-radius: 5px;
  padding: 10px;
  margin-top: 20px;
  display: block;
}

JavaScript

const output = document.getElementById("output");
const divList = document.getElementsByTagName("div");
output.innerText += `div 0 same as div 0: ${divList[0].isSameNode(
  divList[0],
)}\n`;
output.innerText += `div 0 same as div 1: ${divList[0].isSameNode(
  divList[1],
)}\n`;
output.innerText += `div 0 same as div 2: ${divList[0].isSameNode(
  divList[2],
)}\n`;