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Merge pull request #1073 from newbeman/patch-1

Update operator.md
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@ -298,7 +298,7 @@ function example(opts) {
} }
``` ```
上面示例中,参数对象`opts`如果不存在属性`foo`和属性`bar`则为这两个属性设置默认值。有了“Null 赋值运算符”以后,就可以统一写成下面这样。 上面示例中,参数对象`opts`如果不存在属性`foo`和属性`baz`则为这两个属性设置默认值。有了“Null 赋值运算符”以后,就可以统一写成下面这样。
```javascript ```javascript
function example(opts) { function example(opts) {