Error.isError()
Limited availability
The Error.isError() static method checks whether a value is an Error object.
Learning resources on MDN
Browser support
- Chrome 134 Released on 2025-03-04
- Chrome Android 134 Released on 2025-03-04
- Edge 134 Released on 2025-03-06
- Firefox 138 Released on 2025-04-29
- Firefox for Android 138 Released on 2025-04-29
- Safari ❌
- Safari on iOS ❌
Baseline availability blocked since April 2025 by Safari (1 months)
Usage (according to Chrome Platform Status)
~0.148% of page loads. More data at chromestatus.
Specifications
- Error.isError, from TC39 (Ecma International).
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