Public/github/blog/knockblog/node_modules/define-property - knock网盘

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# define-property [![NPM version](https://img.shields.io/npm/v/define-property.svg?style=flat)](https://www.npmjs.com/package/define-property) [![NPM monthly downloads](https://img.shields.io/npm/dm/define-property.svg?style=flat)](https://npmjs.org/package/define-property) [![NPM total downloads](https://img.shields.io/npm/dt/define-property.svg?style=flat)](https://npmjs.org/package/define-property) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/define-property.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/define-property)

> Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.

## Install

Install with [npm](https://www.npmjs.com/):

```sh
$ npm install --save define-property
```

## Release history

See [the CHANGELOG](changelog.md) for updates.

## Usage

**Params**

* `object`: The object on which to define the property.
* `key`: The name of the property to be defined or modified.
* `value`: The value or descriptor of the property being defined or modified.

```js
var define = require('define-property');
var obj = {};
define(obj, 'foo', function(val) {
  return val.toUpperCase();
});

// by default, defined properties are non-enumberable
console.log(obj);
//=> {}

console.log(obj.foo('bar'));
//=> 'BAR'
```

**defining setters/getters**

Pass the same properties you would if using [Object.defineProperty](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty) or [Reflect.defineProperty](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/defineProperty).

```js
define(obj, 'foo', {
  set: function() {},
  get: function() {}
});
```

## About

<details>
<summary>Contributing</summary>

Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).

</details>

<details>
<summary>Running Tests</summary>

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
```

</details>

<details>
<summary>Building docs</summary>

_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), 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
```

</details>

### Related projects

You might also be interested in these projects:

* [assign-deep](https://www.npmjs.com/package/assign-deep): Deeply assign the enumerable properties and/or es6 Symbol properies of source objects to the target… [more](https://github.com/jonschlinkert/assign-deep) | [homepage](https://github.com/jonschlinkert/assign-deep "Deeply assign the enumerable properties and/or es6 Symbol properies of source objects to the target (first) object.")
* [extend-shallow](https://www.npmjs.com/package/extend-shallow): Extend an object with the properties of additional objects. node.js/javascript util. | [homepage](https://github.com/jonschlinkert/extend-shallow "Extend an object with the properties of additional objects. node.js/javascript util.")
* [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep "Recursively merge values in a javascript 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 "Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone.")

### Contributors

| **Commits** | **Contributor** | 
| --- | --- |
| 28 | [jonschlinkert](https://github.com/jonschlinkert) |
| 1 | [doowb](https://github.com/doowb) |

### Author

**Jon Schlinkert**

* Connect with me on [linkedin/in/jonschlinkert](https://linkedin.com/in/jonschlinkert)
* Follow me on [github/jonschlinkert](https://github.com/jonschlinkert)
* Follow me on [twitter/jonschlinkert](https://twitter.com/jonschlinkert)

### License

***

_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on January 25, 2018._

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