Highlight: has() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The has()
method of the Highlight
interface returns a boolean indicating whether a Range
object exists in a Highlight
object or not.
Highlight
is a Set
-like object, so this is similar to using Set.has()
.
Syntax
has(range)
Parameters
range
-
The
Range
object to test for presence in theHighlight
object.
Return value
Returns true
if the specified range exists in the Highlight
object; otherwise false
.
Examples
The code snippet below creates two ranges, and a highlight object that contains one of them. The code then uses the has()
method to check whether each range exists in the highlight:
const range1 = new Range();
const range2 = new Range();
const myHighlight = new Highlight(range1);
myHighlight.has(range1); // true
myHighlight.has(range2); // false
Specifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-set.prototype.has |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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has |
Legend
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- Full support
- Full support
- In development. Supported in a pre-release version.
- In development. Supported in a pre-release version.
- No support
- No support
- See implementation notes.