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docs(object): edit spread operator

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ruanyf 2017-02-09 13:55:23 +08:00
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@ -924,7 +924,15 @@ function entries(obj) {
## 对象的扩展运算符
目前，ES7有一个[提案](https://github.com/sebmarkbage/ecmascript-rest-spread)，将Rest运算符（解构赋值）/扩展运算符（`...`）引入对象。Babel转码器已经支持这项功能。
《数组的扩展》一章中，已经介绍过扩展预算符（`...`）。
```javascript
const [a, ...b] = [1, 2, 3];
a // 1
b // [2, 3]
```
ES2017 将这个运算符[引入](https://github.com/sebmarkbage/ecmascript-rest-spread)了对象。
**（1）解构赋值**