Web/14-前端面试/面试题积累/函数.md

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JavaScript
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2018-03-23 17:05:32 +08:00
```
var arr = [1, 2, 3];
fun(arr);
console.log(arr);
function fun(a) {
a = [];
}
```
上方代码的打印结果是[1,2,3]