Considerations for multiple expression operations in an if Else statement in ASP

Let's take a look at an example:

The code is as follows	Copy Code
<% If fun1 () and fun2 () Then Response.Write ("Yes" & "<br/>") Else Response.Write ("No" & "<br/>") End If Function fun1 () Response.Write ("Fun1" & "<br/>") FUN1 = False End Function Function fun2 () Response.Write ("Fun2" & "<br/>") Fun2 = True End Function %>

According to the figure above, FUN1 returns False when it also calls Fun2 (C # and other languages have done optimizations do not invoke fun2), so when the current expression has a relationship with the top of the writing program may be wrong:

The code is as follows	Copy Code
<% Dim number:number = "mzwu.com" If IsNumeric (number) and Instr (number, ".") =0 and CInt (number) >=10 Then Response.Write ("Yes") Else Response.Write ("No") End If %>

The first two expressions are used to determine that number is an integer, but CInt is still called, it is really maddening, there is no way, by design, change to if nested structure can be resolved:

The code is as follows	Copy Code
<% Dim number:number = "mzwu.com" If IsNumeric (number) and Instr (number, ".") =0 Then If CInt (number) >=10 Then Response.Write ("Yes") Else Response.Write ("No") End If Else Response.Write ("No") End If %>

Other operators also have the same problem, the program code to write must pay attention to.