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The replace() method of the DOMTokenList interface replaces an existing token with a new token.




A DOMString representing the token you want to replace.
A DOMString representing the token you want to replace oldToken with.

Return value



In the following example we retrieve the list of classes set on a <span> element as a DOMTokenList using Element.classList. We then replace a token in the list, and write the list into the <span>'s Node.textContent.

First, the HTML:

<span class="a b c"></span>

Now the JavaScript:

var span = document.querySelector("span");
var classes = span.classList;
try {
  classes.replace("c", "z");
  span.textContent = classes;
} catch(e) {
  span.textContent = e;

The output looks like this:


Specification Status Comment
The definition of 'replace()' in that specification.
Living Standard Initial definition

Browser compatibility

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 61 49 (49) ? ? (Yes)
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 61 61 49.0 (49) ? ? (Yes)

Document Tags and Contributors

 Contributors to this page: jpmedley, TrebuhD, ziyunfei, chrisdavidmills, jmsfwk, zbinlin, teoli
 Last updated by: jpmedley,