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docs(destructuring): fix typo

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zhangbao 2018-01-02 15:12:39 +08:00 committed by GitHub
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@ -122,7 +122,7 @@ let [x, y = 'b'] = ['a']; // x='a', y='b'
let [x, y = 'b'] = ['a', undefined]; // x='a', y='b' let [x, y = 'b'] = ['a', undefined]; // x='a', y='b'
``` ```
注意，ES6 内部使用严格相等运算符（`===`），判断一个位置是否有值。而且，只有当一个数组成员严格等于`undefined`，默认值才会生效。 注意，ES6 内部使用严格相等运算符（`===`），判断一个位置是否有值。所以，只有当一个数组成员严格等于`undefined`，默认值才会生效。
```javascript ```javascript
let [x = 1] = [undefined]; let [x = 1] = [undefined];