Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The has() method of the HighlightRegistry interface returns a boolean indicating whether or not a Highlight object with the specified name exists in the registry.
HighlightRegistry is a Map-like object, so this is similar to using Map.has().
js
has(name)
name
The name of the Highlight object to test for presence in the registry.
Returns true if a highlight with the specified name exists in the registry; otherwise false.
js
const fooHighlight = new Highlight();
CSS.highlights.set("foo", fooHighlight);
myHighlight.has("foo"); // true
myHighlight.has("bar"); // false
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
has |
105 | 105 | preview | No | 91 | No | 105 | 105 | No | 72 | No | 20.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/HighlightRegistry/has