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

This file was generated by verb, v, on March 27, 2016.