Web features explorer - Iterator includes()

Web features explorer

The includes() method of an Iterator object returns true when an item yielded by the iterator is the same as a given value. It's similar to the includes() method of arrays.

Browser support

Chrome 154 Released on 2026-09-22
Chrome Android 154 Released on 2026-09-22
Edge 154 Released on 2026-09-24
Firefox 154 Released on 2026-08-18
Firefox for Android 154 Released on 2026-08-18
Safari Not supported
Safari on iOS Not supported

Baseline availability blocked since September 2026 by Safari (1 months)

MDN documentation

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Specifications

Proposal Iterator Join (#sec-iterator.prototype.join), from TC39 (Ecma International).

View as JSON | Edit this feature | Report an issue | Web-features entry: source, dist