asp中如何判断是数字还是字符 - 编程论坛

#2

multiple19022008-10-26 20:58

您看过相关教程没？

#3

yms1232008-10-26 23:27

<%
function q(x,y)
q=x*x*x+y*y*y
end function
dim x,y
x=request.form("x") '用户没有输入x值为空怎么判断 x是字符串怎么判断
y=request.form("y")
Response.Write "<script language=javascript>"
IF X="" Then
Response.Write "alert('x不能为空');"
End IF
IF IsNumber(X)=False Then
Response.Write "alert('X非数字');"
End IF
Response.Write "</script>"
response.write(x&"^3+"&y&"^3="&q(x,y))
%>
<form name="form1" method="post" action="vbxy.asp">
x=<input type="text" name="x">
y=<input type="text" name="y">
<input type="submit" name="submit" value="计算">
</form>

#4

ml2325282008-10-27 09:11

谢谢楼上的
IsNumber(X)在我的机器上不能用改成这个了IsNumeric(X)
代码如下能达到预期的效果了

程序代码：

<%
function q(x,y)
q=x*x*x+y*y*y
end function
sub c()
dim x,y
x=request.form("x") '用户没有输入x值为空怎么判断 x是字符串怎么判断
y=request.form("y")
IF X="" Then
   exit sub
End IF
IF IsNumeric(X)=False or IsNumeric(y)=False Then
   Response.Write "请输入数字"
   exit sub
End IF
Response.Write "</script>"
response.write(x&"^3+"&y&"^3="&q(x,y))
end sub
call c()
%>
<form name="form1" method="post" action="vbxy.asp">
x=<input type="text" name="x">
y=<input type="text" name="y">
<input type="submit" name="submit" value="计算">
</form>