typedArray.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

See also

• Array.prototype.includes()
• String.prototype.includes()
• TypedArray.prototype.indexOf()