You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
20 lines
519 B
Markdown
20 lines
519 B
Markdown
# Symbols
|
|
|
|
[](http://badge.fury.io/js/symbol)
|
|
|
|
[ES6 Symbols](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-symbol-objects), in your ES5.
|
|
|
|
If `Symbol` is already defined, it will be used. Otherwise, this implements as much of the `Symbol` spec as is possible with plain JavaScript.
|
|
|
|
## Usage
|
|
|
|
```js
|
|
var Symbol = require('symbol');
|
|
var key = Symbol();
|
|
|
|
var obj = {};
|
|
obj[key] = 'foo';
|
|
console.log(obj[key]); // 'foo'
|
|
console.log(Object.keys(obj)); // []
|
|
```
|