The Node.isEqualNode() method tests whether two nodes are equal. Two nodes are equal when they have the same type, defining characteristics (for elements, this would be their ID, number of children, and so forth), its attributes match, and so on. The specific set of data points that must match varies depending on the types of the nodes.

Syntax

var isEqualNode = node.isEqualNode(otherNode);
  • otherNode: The Node to compare equality with.

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

Results

Specifications

Specification Status Comment
DOM
The definition of 'Node.isEqualNode' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 1Edge Full support 12Firefox Full support 2IE Full support 9Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

Document Tags and Contributors

Last updated by: fscholz,