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Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.
Install with npm:
$ npm install --save has-values
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
To test for empty values, do:
function isEmpty(o, isZero) {
return !hasValue(o, isZero);
}
zero
always returns truearray
now recurses, so that an array of empty arrays will return false
null
now returns trueObject
constructor. | homepagePull requests and stars are always welcome. For bugs and feature requests, please create an issue.
(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 readme template.)
To generate the readme, run the following command:
$ npm install -g verbose/verb#dev verb-generate-readme && verb
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:
$ npm install && npm test
Jon Schlinkert
Copyright © 2017, Jon Schlinkert. Released under the MIT License.
This file was generated by verb-generate-readme, v0.6.0, on May 19, 2017.