HighlightRegistry: entries() method
Baseline 2025Newly available
Since June 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The entries() method of the HighlightRegistry interface returns a new Iterator object that contains the [name, highlight] pairs for each element in the HighlightRegistry object, in insertion order.
HighlightRegistry is a Map-like object, so this is similar to using Map.entries().
Syntax
entries()
Parameters
None.
Return value
A new iterator object that contains an array of [name, highlight] for each Highlight object in the HighlightRegistry, in insertion order.
Examples
The code snippet below creates and registers two new highlights, and then logs the highlights and their names by using the iterator returned by the entries() method:
const myHighlight1 = new Highlight();
const myHighlight2 = new Highlight();
CSS.highlights.set("first-highlight", myHighlight1);
CSS.highlights.set("second-highlight", myHighlight2);
const iter = CSS.highlights.entries();
console.log(iter.next().value); // ['first-highlight', Highlight]
console.log(iter.next().value); // ['second-highlight', Highlight]
The following code example shows how to iterate over the highlights in the registry by using a for...of loop:
const myHighlight1 = new Highlight();
const myHighlight2 = new Highlight();
CSS.highlights.set("first-highlight", myHighlight1);
CSS.highlights.set("second-highlight", myHighlight2);
for (const [name, highlight] of CSS.highlights.entries()) {
console.log(`Highlight ${name}`, highlight);
}
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-map.prototype.entries |