[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [arrayMap](./rc-js-util.arraymap.md) ## arrayMap() function Like `Array.map`. **Signature:** ```typescript export declare function arrayMap(items: ArrayLike, callback: (item: TItem, index: number) => TMapped): TMapped[]; ``` ## Parameters

Parameter	Type	Description
items	ArrayLike<TItem>
callback	(item: TItem, index: number) => TMapped

**Returns:** TMapped\[\] ## Remarks Has more consistent performance characteristics cross platform than the built in `Array.map` See [arrayMap()](./rc-js-util.arraymap.md).