web api instance method
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
entries()
Parameters
None.
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
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 textContent.
First, the HTML:
<span class="a b c"></span>
Now the JavaScript:
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:
Interactive exampleOpen the canonical MDN source to run this embedded demo.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.