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README.md
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:
$ npm install has-values --save
Usage
var hasValue = require('has-values');
hasValue('a');
//=> true
hasValue('');
//=> false
hasValue(1);
//=> true
hasValue(0);
//=> false
hasValue(0, true); // treat zero as a value
//=> true
hasValue({a: 'a'}});
//=> true
hasValue({}});
//=> false
hasValue(['a']);
//=> true
hasValue([]);
//=> false
hasValue(function(foo) {}); // function length/arity
//=> true
hasValue(function() {});
//=> false
hasValue(true);
hasValue(false);
//=> true
isEmpty
To test for empty values, do:
function isEmpty(o, isZero) {
return !hasValue(o, isZero);
}
Related projects
You might also be interested in these projects:
- has-value: Returns true if a value exists, false if empty. Works with deeply nested values using… more | homepage
- is-plain-object: Returns true if an object was created by the
Object
constructor. | homepage - isobject: Returns true if the value is an object and not an array or null. | homepage
Contributing
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
Building docs
Generate readme and API documentation with verb:
$ npm install verb && npm run docs
Or, if verb is installed globally:
$ verb
Running tests
Install dev dependencies:
$ npm install -d && npm test
Author
Jon Schlinkert
License
Copyright © 2016, Jon Schlinkert. Released under the MIT license.
This file was generated by verb, v, on March 27, 2016.