# define-property [![NPM version](https://badge.fury.io/js/define-property.svg)](http://badge.fury.io/js/define-property) > Define a non-enumerable property on an object. ## Install Install with [npm](https://www.npmjs.com/) ```sh $ npm i define-property --save ``` ## Usage **Params** * `obj`: The object on which to define the property. * `prop`: The name of the property to be defined or modified. * `descriptor`: The descriptor for the property being defined or modified. ```js var define = require('define-property'); var obj = {}; define(obj, 'foo', function(val) { return val.toUpperCase(); }); console.log(obj); //=> {} console.log(obj.foo('bar')); //=> 'BAR' ``` **get/set** ```js define(obj, 'foo', { get: function() {}, set: function() {} }); ``` ## Related projects * [delegate-object](https://www.npmjs.com/package/delegate-object): Copy properties from an object to another object, where properties with function values will be… [more](https://www.npmjs.com/package/delegate-object) | [homepage](https://github.com/doowb/delegate-object) * [forward-object](https://www.npmjs.com/package/forward-object): Copy properties from an object to another object, where properties with function values will be… [more](https://www.npmjs.com/package/forward-object) | [homepage](https://github.com/doowb/forward-object) * [mixin-deep](https://www.npmjs.com/package/mixin-deep): Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone. | [homepage](https://github.com/jonschlinkert/mixin-deep) * [mixin-object](https://www.npmjs.com/package/mixin-object): Mixin the own and inherited properties of other objects onto the first object. Pass an… [more](https://www.npmjs.com/package/mixin-object) | [homepage](https://github.com/jonschlinkert/mixin-object) ## Running tests Install dev dependencies: ```sh $ npm i -d && npm test ``` ## Contributing Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/define-property/issues/new). ## Author **Jon Schlinkert** + [github/jonschlinkert](https://github.com/jonschlinkert) + [twitter/jonschlinkert](http://twitter.com/jonschlinkert) ## License Copyright © 2015 Jon Schlinkert Released under the MIT license. *** _This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on August 31, 2015._