VBScript 嵌套 If 语句
另一个 If 或 ElseIf 语句内的 If 或 ElseIf 语句。 内部 If 语句根据最外部 If 语句执行。 这使得 VBScript 能够轻松处理复杂的情况。
语法
VBScript 中嵌套 if 语句的语法为 −
If(boolean_expression) Then
Statement 1
.....
.....
Statement n
If(boolean_expression) Then
Statement 1
.....
.....
Statement n
ElseIf (boolean_expression) Then
Statement 1
.....
....
Statement n
Else
Statement 1
.....
....
Statement n
End If
Else
Statement 1
.....
....
Statement n
End If
示例
<!DOCTYPE html>
<html>
<body>
<script language = "vbscript" type = "text/vbscript">
Dim a
a = 23
If a > 0 Then
Document.write "The Number is a POSITIVE Number"
If a = 1 Then
Document.write "The Number is Neither Prime NOR Composite"
Elseif a = 2 Then
Document.write "The Number is the Only Even Prime Number"
Elseif a = 3 Then
Document.write "The Number is the Least Odd Prime Number"
Else
Document.write "The Number is NOT 0,1,2 or 3"
End If
ElseIf a < 0 Then
Document.write "The Number is a NEGATIVE Number"
Else
Document.write "The Number is ZERO"
End If
</script>
</body>
</html>
执行上述代码时，会产生以下结果 −
The Number is a POSITIVE Number The Number is NOT 0,1,2 or 3
vbscript_decisions.html
