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# isEven [![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] > Test if a value is an even number.
## Usage ```javascript import isEven from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@deno/mod.js'; ``` You can also import the following named exports from the package: ```javascript import { isObject, isPrimitive } from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@deno/mod.js'; ``` #### isEven( value ) Tests if a `value` is an even `number`. ```javascript import Number from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-ctor@deno/mod.js'; var bool = isEven( 6.0 ); // returns true bool = isEven( new Number( 6.0 ) ); // returns true bool = isEven( 3.0 ); // returns false bool = isEven( -3.14 ); // returns false bool = isEven( null ); // returns false bool = isEven( NaN ); // returns false ``` #### isEven.isPrimitive( value ) Tests if a `value` is a primitive even `number`. ```javascript import Number from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-ctor@deno/mod.js'; var bool = isEven.isPrimitive( -4.0 ); // returns true bool = isEven.isPrimitive( new Number( -4.0 ) ); // returns false ``` #### isEven.isObject( value ) Tests if a `value` is a `Number` object having an even number value. ```javascript import Number from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-ctor@deno/mod.js'; var bool = isEven.isObject( 4.0 ); // returns false bool = isEven.isObject( new Number( 4.0 ) ); // returns true ```
## Examples ```javascript import Number from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-ctor@deno/mod.js'; import isEven from 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@deno/mod.js'; var bool = isEven( 4.0 ); // returns true bool = isEven( 0.0 ); // returns true bool = isEven( new Number( 4 ) ); // returns true bool = isEven( 5.0 ); // returns false bool = isEven( NaN ); // returns false bool = isEven( '5' ); // returns false bool = isEven( null ); // returns false ```
* * * ## See Also - [`@stdlib/assert-is-odd`][@stdlib/assert/is-odd]: test if a value is an odd number.
* * * ## Notice This package is part of [stdlib][stdlib], a standard library 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 © 2016-2024. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-even.svg [npm-url]: https://npmjs.org/package/@stdlib/assert-is-even [test-image]: https://github.com/stdlib-js/assert-is-even/actions/workflows/test.yml/badge.svg?branch=main [test-url]: https://github.com/stdlib-js/assert-is-even/actions/workflows/test.yml?query=branch:main [coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-even/main.svg [coverage-url]: https://codecov.io/github/stdlib-js/assert-is-even?branch=main [chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg [chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im [stdlib]: https://github.com/stdlib-js/stdlib [stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors [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/assert-is-even/tree/deno [deno-readme]: https://github.com/stdlib-js/assert-is-even/blob/deno/README.md [umd-url]: https://github.com/stdlib-js/assert-is-even/tree/umd [umd-readme]: https://github.com/stdlib-js/assert-is-even/blob/umd/README.md [esm-url]: https://github.com/stdlib-js/assert-is-even/tree/esm [esm-readme]: https://github.com/stdlib-js/assert-is-even/blob/esm/README.md [branches-url]: https://github.com/stdlib-js/assert-is-even/blob/main/branches.md [stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-even/main/LICENSE [@stdlib/assert/is-odd]: https://github.com/stdlib-js/assert-is-odd/tree/deno