mirror of https://github.com/jkjoy/sunpeiwen.git
73 lines
2.7 KiB
Markdown
73 lines
2.7 KiB
Markdown
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# assign-symbols [](http://badge.fury.io/js/assign-symbols)
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> Assign the enumerable es6 Symbol properties from an object (or objects) to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 Object.assign method.
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From the [Mozilla Developer docs for Symbol](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol):
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> A symbol is a unique and immutable data type and may be used as an identifier for object properties. The symbol object is an implicit object wrapper for the symbol primitive data type.
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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 assign-symbols --save
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```
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## Usage
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```js
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var assignSymbols = require('assign-symbols');
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var obj = {};
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var one = {};
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var symbolOne = Symbol('aaa');
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one[symbolOne] = 'bbb';
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var two = {};
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var symbolTwo = Symbol('ccc');
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two[symbolTwo] = 'ddd';
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assignSymbols(obj, one, two);
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console.log(obj[symbolOne]);
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//=> 'bbb'
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console.log(obj[symbolTwo]);
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//=> 'ddd'
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```
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## Similar projects
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* [assign-deep](https://www.npmjs.com/package/assign-deep): Deeply assign the enumerable properties of source objects to a destination object. | [homepage](https://github.com/jonschlinkert/assign-deep)
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* [clone-deep](https://www.npmjs.com/package/clone-deep): Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives. | [homepage](https://github.com/jonschlinkert/clone-deep)
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* [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)
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* [merge-deep](https://www.npmjs.com/package/merge-deep): Recursively merge values in a javascript object. | [homepage](https://github.com/jonschlinkert/merge-deep)
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* [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)
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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/assign-symbols/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
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Released under the MIT license.
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***
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_This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on November 06, 2015._
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