JS里怎样用for循环求出从1到100相加的结果？？？？？

Question

如题所述

Answer 1

<script type="text/javascript">

var i = 0;
for(var j=1;j<=100;j++){
 i +=j;
}
alert(i);

</script>

 结果是 5050

Answer 2

我知道vb的要吗追答

Dim i as double x as double
x=0
for i=1 to 100
x=x+i
next i