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Highlight: size property

Baseline 2025
Newly 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 size property returns the number of Range objects in a Highlight object.

Value

The value of size is a read-only integer representing how many entries the highlight object has.

Examples

>

Using size

const highlight = new Highlight();
highlight.add(range1);
highlight.add(range2);
highlight.add(range3);

console.log(highlight.size); // 3

Specifications

Specification
ECMAScript® 2026 Language Specification>
# sec-get-set.prototype.size>

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
size 105 105 140 91 17.2 105 140 72 17.2 20.0 105 17.2

See also

© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Highlight/size