| 1 | # 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)
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| 2 |
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| 3 | > Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.
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| 4 |
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| 5 | ## Install
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| 6 |
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| 7 | Install with [npm](https://www.npmjs.com/):
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| 8 |
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| 9 | ```sh
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| 10 | $ npm install --save has-values
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| 11 | ```
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| 12 |
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| 13 | ## Usage
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| 14 |
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| 15 | ```js
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| 16 | var hasValue = require('has-values');
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| 17 |
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| 18 | hasValue('a');
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| 19 | //=> true
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| 20 |
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| 21 | hasValue('');
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| 22 | //=> false
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| 23 |
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| 24 | hasValue(1);
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| 25 | //=> true
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| 26 |
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| 27 | hasValue(0);
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| 28 | //=> false
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| 29 |
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| 30 | hasValue({a: 'a'}});
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| 31 | //=> true
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| 32 |
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| 33 | hasValue({});
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| 34 | hasValue({foo: undefined});
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| 35 | //=> false
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| 36 |
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| 37 | hasValue({foo: null});
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| 38 | //=> true
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| 39 |
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| 40 | hasValue(['a']);
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| 41 | //=> true
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| 42 |
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| 43 | hasValue([]);
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| 44 | hasValue([[], []]);
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| 45 | hasValue([[[]]]);
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| 46 | //=> false
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| 47 |
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| 48 | hasValue(['foo']);
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| 49 | hasValue([0]);
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| 50 | //=> true
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| 51 |
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| 52 | hasValue(function(foo) {});
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| 53 | //=> true
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| 54 |
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| 55 | hasValue(function() {});
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| 56 | //=> true
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| 57 |
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| 58 | hasValue(true);
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| 59 | //=> true
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| 60 |
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| 61 | hasValue(false);
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| 62 | //=> true
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| 63 | ```
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| 64 |
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| 65 | ## isEmpty
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| 66 |
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| 67 | To test for empty values, do:
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| 68 |
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| 69 | ```js
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| 70 | function isEmpty(o, isZero) {
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| 71 | return !hasValue(o, isZero);
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| 72 | }
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| 73 | ```
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| 74 |
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| 75 | ## Release history
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| 76 |
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| 77 | ### v1.0.0
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| 78 |
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| 79 | * `zero` always returns true
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| 80 | * `array` now recurses, so that an array of empty arrays will return `false`
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| 81 | * `null` now returns true
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| 82 |
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| 83 | ## About
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| 84 |
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| 85 | ### Related projects
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| 86 |
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| 87 | * [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.")
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| 88 | * [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.")
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| 89 | * [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.")
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| 90 | * [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.")
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| 91 | * [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.")
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| 92 |
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| 93 | ### Contributing
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| 94 |
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| 95 | Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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| 96 |
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| 97 | ### Building docs
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| 98 |
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| 99 | _(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.)_
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| 100 |
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| 101 | To generate the readme, run the following command:
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| 102 |
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| 103 | ```sh
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| 104 | $ npm install -g verbose/verb#dev verb-generate-readme && verb
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| 105 | ```
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| 106 |
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| 107 | ### Running tests
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| 108 |
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| 109 | 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:
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| 110 |
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| 111 | ```sh
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| 112 | $ npm install && npm test
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| 113 | ```
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| 114 |
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| 115 | ### Author
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| 116 |
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| 117 | **Jon Schlinkert**
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| 118 |
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| 119 | * [github/jonschlinkert](https://github.com/jonschlinkert)
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| 120 | * [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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| 121 |
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| 122 | ### License
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| 123 |
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| 124 | Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
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| 125 | Released under the [MIT License](LICENSE).
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| 126 |
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| 127 | ***
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| 128 |
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| 129 | _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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