[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [filterZip](./js-utils.filterzip.md) ## filterZip() function Filter and zip some arrays. The `cb` is called for each slice, which is kept if `cb` returns true. Signature: ```typescript export declare function filterZip(cb: (a: T1) => boolean, l1: Array): Array; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | cb | (a: T1) => boolean | | | l1 | Array<T1> | | Returns: Array<T1>