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HighlightRegistry: has() method

files/en-us/web/api/highlightregistry/has/index.md

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{{APIRef("CSS Custom Highlight API")}}

The has() method of the {{domxref("HighlightRegistry")}} interface returns a boolean indicating whether or not a {{domxref("Highlight")}} object with the specified name exists in the registry.

HighlightRegistry is a {{jsxref("Map")}}-like object, so this is similar to using {{jsxref("Map.has()")}}.

Syntax

js-nolint
has(name)

Parameters

  • name
    • : The name of the Highlight object to test for presence in the registry.

Return value

Returns true if a highlight with the specified name exists in the registry; otherwise false.

Examples

js
const fooHighlight = new Highlight();
CSS.highlights.set("foo", fooHighlight);

myHighlight.has("foo"); // true
myHighlight.has("bar"); // false

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also