Node.isSameNode()

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

const 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/>";

• Node.isEqualNode()