undefined相关
<script>
var undefined = "kyuhyun";
alert(undefined);//undefined
</script>
<script>
aa = function(){
var undefined = "kyuhyun";
alert(undefined);//kyuhyun
}
</script>
在javascript为什么对于undefined的赋值要在函数里才有用？
Kivien
2015-09-14
2 回答
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