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:

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: Returns true if a value exists, false if empty. Works with deeply nested values using… more | [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: 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: 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: 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: 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, 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
• twitter/jonschlinkert

License

Copyright © 2017, Jon Schlinkert. Released under the [MIT License](LICENSE).

_This file was generated by verb-generate-readme, v0.6.0, on May 19, 2017._