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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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