Array includes()Baseline · Widely available
The includes() method of arrays and typed arrays returns whether a given value appears in the array.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Sep 20, 2016. Widely available since Mar 20, 2019.
Browser support
DesktopChrome
1–46Not supported
47+Supportedsince Dec 1, 2015
Current: 155Edge
12–13Not supported
14+Supportedsince Aug 2, 2016
Current: 154Firefox
1–42Not supported
43+Supportedsince Dec 15, 2015
Current: 157Safari
1–9.1Not supported
10+Supportedsince Sep 20, 2016
Current: 27MobileChrome Android
18–46Not supported
47+Supportedsince Dec 2, 2015
Current: 155Firefox Android
4–42Not supported
43+Supportedsince Dec 15, 2015
Current: 157Safari iOS
1–9.3Not supported
10+Supportedsince Sep 13, 2016
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: includes.
Feature detection
JS · check before using
if ("includes" in Array || ("prototype" in Array && "includes" in Array.prototype)) {
// Array.includes is available
}Documentation (MDN)
Specification
Usage share
Sub-features
Support for each part of the feature (2). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| Array.includes | 47 | 14 | 43 | 9 | 47 | 43 | 9 |
| TypedArray.includes | 47 | 14 | 43 | 10 | 47 | 43 | 10 |