TypedArray.prototype.includes()

The includes() method determines whether a typed array includes a certain element, returning true or false as appropriate. This method has the same algorithm as Array.prototype.includes(). TypedArray is one of the typed array types here.

Syntax

typedarray.includes(searchElement[, fromIndex]);

Parameters

searchElement
The element to search for.
fromIndex
Optional. The position in this array at which to begin searching for searchElement; defaults to 0.

Return value

A Boolean.

Examples

var uint8 = new Uint8Array([1,2,3]);
uint8.includes(2);     // true
uint8.includes(4);     // false
uint8.includes(3, 3);  // false

// NaN handling (only true for Float32 and Float64)
new Uint8Array([NaN]).includes(NaN); // false, since the NaN passed to the constructor gets converted to 0
new Float32Array([NaN]).includes(NaN); // true;
new Float64Array([NaN]).includes(NaN); // true;

Specifications

Specification Status Comment
ECMAScript 2016 (ECMA-262)
The definition of 'TypedArray.prototype.includes' in that specification.
Standard Initial definition.
ECMAScript 2017 Draft (ECMA-262)
The definition of 'TypedArray.prototype.includes' in that specification.
Draft  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 47 43 No support 34 No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 47 43 No support 34 No support

See also

Document Tags and Contributors

 Contributors to this page: eduardoboucas, fscholz, tschneidereit, DomenicDenicola
 Last updated by: eduardoboucas,