47 lines
1.3 KiB
Markdown
47 lines
1.3 KiB
Markdown
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---
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title: Use the Rest Operator with Function Parameters
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localeTitle: 将Rest运算符与函数参数一起使用
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---
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## 将Rest运算符与函数参数一起使用
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### 休息参数说明
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[Mozilla开发者网络](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters "Mozilla开发者网络")
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### 与rest参数相比，Spread运算符
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[堆栈溢出](https://stackoverflow.com/questions/33898512/spread-operator-vs-rest-parameter-in-es2015-es6 "堆栈溢出")
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### 视频解释传播和休息
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[](http://www.youtube.com/watch?feature=player_embedded&v=iLx4ma8ZqvQ
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)
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[### 例
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这段代码
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```javascript
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const product = (function() {
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"use strict";
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return function product(n1, n2, n3) {
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const args = [n1, n2, n3];
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return args.reduce((a, b) => a * b, 1);
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};
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})();
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console.log(product(2, 4, 6));//48
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```
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可以这样写
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```javascript
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const product = (function() {
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"use strict";
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return function product(...n) {
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return n.reduce((a, b) => a * b, 1);
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};
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})();
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console.log(product(2, 4, 6));//48
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```](http://www.youtube.com/watch?feature=player_embedded&v=iLx4ma8ZqvQ
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)
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