npm package: @stdlib/array-base-assert-contains
Description: Test if an array contains a provided search value.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# contains

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Test if an array contains a provided search value.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-assert-contains
```

</section>

<section class="usage">

## Usage

```javascript
var contains = require( '@stdlib/array-base-assert-contains' );
```

#### contains( x, value )

Tests if an array contains a provided search value.

```javascript
var x = [ 1, 2, 3 ];

var out = contains( x, 2 );
// returns true
```

#### contains.factory( x )

Returns a function which tests if an array contains a provided search value.

```javascript
var x = [ 1, 2, 3 ];

var fcn = contains.factory( x );
// returns <Function>

var out = fcn( 2 );
// returns true

out = fcn( 4 );
// returns false
```

</section>

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<section class="notes">

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var AccessorArray = require( '@stdlib/array-base-accessor' );
var contains = require( '@stdlib/array-base-assert-contains' );

// Create an accessor array:
var arr = new AccessorArray( [ 1, 2, 3, 4 ] );

// Check whether the array contains various values...
var bool = contains( arr, 2 );
// returns true

bool = contains( arr, 4 );
// returns true

bool = contains( arr, 9 );
// returns false
```

</section>

<!-- /.examples -->

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* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

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[test-url]: https://github.com/stdlib-js/array-base-assert-contains/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/array-base-assert-contains/main.svg
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[stdlib]: https://github.com/stdlib-js/stdlib

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/array-base-assert-contains/tree/deno
[deno-readme]: https://github.com/stdlib-js/array-base-assert-contains/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/array-base-assert-contains/tree/umd
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[esm-url]: https://github.com/stdlib-js/array-base-assert-contains/tree/esm
[esm-readme]: https://github.com/stdlib-js/array-base-assert-contains/blob/esm/README.md
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