VBScript UBound 函數
完整的VBScript參考手冊 UBound 函數返回指示數組維數的最大下標。
提示： UBound函數與LBound函數共同使用，可以確定數組的大小。
語法
UBound(arrayname[,dimension])
| 参数 | 描述 |
|---|---|
| arrayname | 必需。数组变量的名称。 |
| dimension | 可选。要返回哪一维的下界。 1 = 第一维， 2 = 第二维，以此类推。默认是 1 。 |
實例
實例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>
days=Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat")
document.write(LBound(days) & "<br />")
document.write(UBound(days) & "<br />")
</script>
以上實例輸出結果：
0
6
6
嘗試一下»
實例2
一個二維數組：
<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>
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>
以上實例輸出結果：
0
2
0
3
2
0
3
嘗試一下»
完整的VBScript參考手冊