UBound 函数

VBScript UBound 函数返回指定维数数组的最大有效下标。

UBound 函数返回指示数组维数的最大下标。

提示：UBound 函数与 LBound 函数共同使用，可以确定数组的大小。

语法

 UBound(arrayname[,dimension])

实例 1

<script type="text/vbscript">

days=Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat")
document.write(LBound(days) & "<br />")
document.write(UBound(days) & "<br />")

</script>

以上实例输出结果：

0
6

实例 2

一个二维数组：

<script type="text/vbscript">

Dim food(2,3)
food(0,0)="Apple"
food(0,1)="Banana"
food(0,2)="Orange"
food(0,3)="Lemon"
food(1,0)="Pizza"
food(1,1)="Hamburger"
food(1,2)="Spaghetti"
food(1,3)="Meatloaf"
food(2,0)="Cake"
food(2,1)="Cookie"
food(2,2)="Icecream"
food(2,3)="Chocolate"
document.write(LBound(food,1) & "<br />")
document.write(UBound(food,1) & "<br />")
document.write(LBound(food,2) & "<br />")
document.write(UBound(food,2) & "<br />")

</script>

以上实例输出结果：

0
2
0
3