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75 lines
2.1 KiB
Markdown
75 lines
2.1 KiB
Markdown
# arr-diff [](https://www.npmjs.com/package/arr-diff) [](https://travis-ci.org/jonschlinkert/base)
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> Returns an array with only the unique values from the first array, by excluding all values from additional arrays using strict equality for comparisons.
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## Install
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Install with [npm](https://www.npmjs.com/)
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```sh
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$ npm i arr-diff --save
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```
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Install with [bower](http://bower.io/)
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```sh
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$ bower install arr-diff --save
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```
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## API
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### [diff](index.js#L33)
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Return the difference between the first array and additional arrays.
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**Params**
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* `a` **{Array}**
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* `b` **{Array}**
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* `returns` **{Array}**
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**Example**
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```js
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var diff = require('arr-diff');
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var a = ['a', 'b', 'c', 'd'];
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var b = ['b', 'c'];
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console.log(diff(a, b))
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//=> ['a', 'd']
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```
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## Related projects
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* [arr-flatten](https://www.npmjs.com/package/arr-flatten): Recursively flatten an array or arrays. This is the fastest implementation of array flatten. | [homepage](https://github.com/jonschlinkert/arr-flatten)
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* [array-filter](https://www.npmjs.com/package/array-filter): Array#filter for older browsers. | [homepage](https://github.com/juliangruber/array-filter)
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* [array-intersection](https://www.npmjs.com/package/array-intersection): Return an array with the unique values present in _all_ given arrays using strict equality… [more](https://www.npmjs.com/package/array-intersection) | [homepage](https://github.com/jonschlinkert/array-intersection)
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## Running tests
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Install dev dependencies:
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```sh
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$ npm i -d && npm test
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```
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## Contributing
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/arr-diff/issues/new).
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## Author
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**Jon Schlinkert**
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+ [github/jonschlinkert](https://github.com/jonschlinkert)
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+ [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
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## License
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Copyright © 2015 [Jon Schlinkert](https://github.com/jonschlinkert)
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Released under the MIT license.
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***
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_This file was generated by [verb](https://github.com/verbose/verb) on Sat Dec 05 2015 23:24:53 GMT-0500 (EST)._
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