ES6 Array.prototype.includes shim

Simple ES6 Array.prototype.includes polyfill for older environments taken from MDN.

For browsers only, bower-friendly. Explicitly not meant to be used with node, use array-includes if you wish a shim for node.

Installation

• Just include repo before your scripts.
• bower install mdn-array.prototype.includes

Usage

• Array.prototype.includes(searchElement[, fromIndex]) determines whether an array includes a certain element, returning true or false as appropriate.

Parameters

• searchElement: The element to search for.
• fromIndex: Optional. The position in this array at which to begin searching for searchElement. A negative value searches from the index of array.length + fromIndex by asc. Defaults to 0.

Code example:

// Default:
[1, 5, 7, 10].includes(5) // true
[1, 5, NaN, 10].includes(NaN) // true

Acknowledgements

Readme partially taken from MDN. Tests taken from array-includes.

License

CC0 1.0