78 lines
2.3 KiB
Markdown
Executable File
78 lines
2.3 KiB
Markdown
Executable File
# node.extend
|
|
|
|
A port of jQuery.extend that **actually works** on node.js
|
|
|
|
[![Build Status][travis-svg]][travis-url]
|
|
[![dependency status][deps-svg]][deps-url]
|
|
[![dev dependency status][dev-deps-svg]][dev-deps-url]
|
|
|
|
[![browser support][testling-png]][testling-url]
|
|
|
|
|
|
## Description
|
|
|
|
None of the existing ones on npm really work therefore I ported it myself.
|
|
|
|
|
|
|
|
## Usage
|
|
|
|
To install this module in your current working directory (which should already contain a package.json), run
|
|
|
|
```
|
|
npm install node.extend
|
|
```
|
|
|
|
You can additionally just list the module in your [package.json](https://npmjs.org/doc/json.html) and run npm install.
|
|
|
|
Then, require this package where you need it:
|
|
|
|
```
|
|
var extend = require('node.extend');
|
|
```
|
|
|
|
The syntax for merging two objects is as follows:
|
|
|
|
```
|
|
var destObject = extend({}, sourceObject);
|
|
// Where sourceObject is the object whose properties will be copied into another.
|
|
// NOTE: In this situation, this is not a deep merge. See below on how to handle a deep merge.
|
|
```
|
|
|
|
For information about how the clone works internally, view source in lib/extend.js or checkout the doc from [jQuery][]
|
|
|
|
### A Note About Deep Merge (avoiding pass-by-reference cloning)
|
|
|
|
In order to force a deep merge, when extending an object, you must pass boolean true as the first argument to extend:
|
|
|
|
```
|
|
var destObject = extend(true, {}, sourceObject);
|
|
// Where sourceObject is the object whose properties will be copied into another.
|
|
```
|
|
|
|
See [this article](http://www.jon-carlos.com/2013/is-javascript-call-by-value-or-call-by-reference/) for more information about the need for deep merges in JavaScript.
|
|
|
|
## Credit
|
|
|
|
- Jordan Harband [@ljharb][]
|
|
|
|
|
|
|
|
## License
|
|
|
|
Copyright 2011, John Resig
|
|
Dual licensed under the MIT or GPL Version 2 licenses.
|
|
http://jquery.org/license
|
|
|
|
[testling-png]: https://ci.testling.com/dreamerslab/node.extend.png
|
|
[testling-url]: https://ci.testling.com/dreamerslab/node.extend
|
|
[travis-svg]: https://travis-ci.org/dreamerslab/node.extend.svg
|
|
[travis-url]: https://travis-ci.org/dreamerslab/node.extend
|
|
[deps-svg]: https://david-dm.org/dreamerslab/node.extend.svg
|
|
[deps-url]: https://david-dm.org/dreamerslab/node.extend
|
|
[dev-deps-svg]: https://david-dm.org/dreamerslab/node.extend/dev-status.svg
|
|
[dev-deps-url]: https://david-dm.org/dreamerslab/node.extend#info=devDependencies
|
|
[jQuery]: http://api.jquery.com/jQuery.extend/
|
|
[@ljharb]: https://twitter.com/ljharb
|
|
|