当用户希望根据表达式的值执行一组语句时，可以使用Select Case语句。每个值被称为一个案例，和可变被接通ON基于每种情况下。如果测试表达式与用户指定的任何Case不匹配，则执行Case Else语句。
Case Else是Select Case中的可选语句，但是，始终具有Case Else语句是一种良好的编程习惯。
VBScript中的Select语句的语法：
Select Case expression
Case expressionlist1
statement1
statement2
....
....
statement1n
Case expressionlist2
statement1
statement2
....
....
Case expressionlistn
statement1
statement2
....
....
Case Else
elsestatement1
elsestatement2
....
....
End Select
<!DOCTYPE html>
<html>
<body>
<script language = "vbscript" type = "text/vbscript">
Dim MyVar
MyVar = 1
Select case MyVar
case 1
Document.write "The Number is the Least Composite Number"
case 2
Document.write "The Number is the only Even Prime Number"
case 3
Document.write "The Number is the Least Odd Prime Number"
case else
Document.write "Unknown Number"
End select
</script>
</body>
</html> 在上面的示例中，MyVar的值为1。因此，将执行情况1。
The Number is the Least Composite Number