W3cubDocs

/Web APIs

DOMTokenList: entries() method

The entries() method of the DOMTokenList interface returns an iterator allowing you to go through all key/value pairs contained in this object. The values are Arrays which have [key, value] pairs, each representing a single token.

Syntax

js

entries()

Return value

Returns an iterator.

Examples

In the following example we retrieve the list of classes set on a <span> element as a DOMTokenList using Element.classList. We when retrieve an iterator containing the key/value pairs using entries(), then iterate through each one using a for...of loop, writing them to 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 iterator = classes.entries();

for (const value of iterator) {
  span.textContent += `(${value})`;
}

The output looks like this:

Specifications

No specification found

No specification data found for api.DOMTokenList.entries.
Check for problems with this page or contribute a missing spec_url to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
entries 42 16 50 No 29 10.1 42 42 50 29 10.3 4.0

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/entries