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# has-values [](https://www.npmjs.com/package/has-values) [](https://npmjs.org/package/has-values) [](https://npmjs.org/package/has-values) [](https://travis-ci.org/jonschlinkert/has-values) > Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays. ## Install Install with [npm](https://www.npmjs.com/): ```sh $ npm install --save has-values ``` ## Usage ```js var hasValue = require('has-values'); hasValue('a'); //=> true hasValue(''); //=> false hasValue(1); //=> true hasValue(0); //=> false hasValue({a: 'a'}}); //=> true hasValue({}); hasValue({foo: undefined}); //=> false hasValue({foo: null}); //=> true hasValue(['a']); //=> true hasValue([]); hasValue([[], []]); hasValue([[[]]]); //=> false hasValue(['foo']); hasValue([0]); //=> true hasValue(function(foo) {}); //=> true hasValue(function() {}); //=> true hasValue(true); //=> true hasValue(false); //=> true ``` ## isEmpty To test for empty values, do: ```js function isEmpty(o, isZero) { return !hasValue(o, isZero); } ``` ## Release history ### v1.0.0 * `zero` always returns true * `array` now recurses, so that an array of empty arrays will return `false` * `null` now returns true ## About ### Related projects * [has-value](https://www.npmjs.com/package/has-value): Returns true if a value exists, false if empty. Works with deeply nested values using… [more](https://github.com/jonschlinkert/has-value) | [homepage](https://github.com/jonschlinkert/has-value "Returns true if a value exists, false if empty. Works with deeply nested values using object paths.") * [is-number](https://www.npmjs.com/package/is-number): Returns true if the value is a number. comprehensive tests. | [homepage](https://github.com/jonschlinkert/is-number "Returns true if the value is a number. comprehensive tests.") * [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object "Returns true if an object was created by the `Object` constructor.") * [isobject](https://www.npmjs.com/package/isobject): Returns true if the value is an object and not an array or null. | [homepage](https://github.com/jonschlinkert/isobject "Returns true if the value is an object and not an array or null.") * [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of "Get the native type of a value.") ### Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). ### Building docs _(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ``` ### Running tests Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command: ```sh $ npm install && npm test ``` ### Author **Jon Schlinkert** * [github/jonschlinkert](https://github.com/jonschlinkert) * [twitter/jonschlinkert](https://twitter.com/jonschlinkert) ### License Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert). Released under the [MIT License](LICENSE). *** _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on May 19, 2017._
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