DOMTokenList: replace() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The replace()
method of the DOMTokenList
interface
replaces an existing token with a new token.
If the first token doesn't exist, replace()
returns false
immediately,
without adding the new token to the token list.
Syntax
js
replace(oldToken, newToken)
Parameters
Return value
A boolean value, which is true
if oldToken
was
successfully replaced, or false
if not.
Examples
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:
html
<span class="a b c"></span>
Now the JavaScript:
js
const span = document.querySelector("span");
const classes = span.classList;
const result = classes.replace("c", "z");
span.textContent = result ? classes : "token not replaced successfully";
The output looks like this:
Specifications
Specification |
---|
DOM Standard # ref-for-dom-domtokenlist-replace① |
Browser compatibility
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