不要节约使用变量

答案：Now, you might be wondering, what does he mean, Don't skimp on the variables? Well, often times it is more 
efficient to use variables to store results from ADO queries or from objects, and then reference the 
variable as opposed to continuously referencing the object. 

For example, you could do this: 


If Request.QueryString("Name") = "Frank" Then
   ...
End If

If Request.QueryString("Name") = "Steve" Then
   ...
End If

Response.Write("Your name is " & Request.QueryString("Name")) 
Each time you use the Request object, ASP has to go read the QueryString variable name. You can reduce 
this to having to just read this once by doing the following: 


Dim strName
strName = Request.QueryString("Name")

If strName = "Frank" Then
   ...
End If

If strName = "Steve" Then
   ...
End If

Response.Write("Your name is " & strName) 
Plus, I personally think the above scenario is easier to read. It's easier, I think, to mentally associate 
strName to be the user's name as opposed to associating Request.QueryString("Name") as the user's name. 
Just my two cents, though! 

上一个：left() 函数是 VBScript 的函数，VBScript 将1个汉字看作1个字符，因此用 left()不能得到正确的字符长度...
下一个：实现文件下载而不是由ie打开的代码。