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

includes(searchElement)
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

Using includes

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

Browser compatibility

See also

• A polyfill of TypedArray.prototype.includes is available in core-js
• Array.prototype.includes()
• String.prototype.includes()
• TypedArray.prototype.indexOf()