javascript两个问题不知道是什么原因?
问题一:
<script language="javascript">
function test()
{
var tt=new function("x","y","var sum;sum=x+y;return sum;");
alert(tt(3,4));
}
</script>
问题二:
<script language="javascript">
function lab()
{
var str="";
for(var i=0;i<arguments.length;i++)
{
str=str+" "+arguments[i];
}
alert(str);
}
function("aa","bb","cc");
</script>