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<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title><%="页面标题"%></title> </head> <body> <%="多条件判断"%> <% response.Write("<br />") response.Write("利用response对象的Write方法输出地内容!") %> <br /> <% dim a,b a=200 b=300 response.Write("两数之和为:") response.Write(a+b) response.Write("<br />") if a=100 then response.Write("a=100,第一个条件满足。") elseif a=200 then response.Write("a=200,第二个条件满足。") elseif a=300 then response.Write("a=300,第三个条件满足。") else response.Write("三个条件都不满足。") end if %> <% response.Write("<br />") dim textnumber textnumber=200 select case textnumber case 100 response.Write("数值为100, 条件满足!") case 200 response.Write("数值为200,条件满足 !") case 300 response.Write("数值为300 ,条件满足!") case else response.Write("以上条件,条件都不满足!") end select %> <% response.Write("<br />") dim i,sum i=0 sum=0 while i<=100 sum=sum+i i=i+1 wend response.Write("100以内所有整数的和为:") response.Write(sum) %> <% response.Write("<br />") dim w,s w=0 s=0 do s=s+w w=w+1 loop while w<=100 response.Write("100之内的所有整数之和为:") response.Write(s) response.Write("<br/>") response.Write("w的值是:") response.Write(w) %> </body> </html> 具体的介绍就不多说了,大家看下实例就可以了 考虑后期的便于阅读,极客世界小编再为大家整理一下 asp if语句 ①if A then B ②if A then B end if ③if A then B else C end if ④if A then B elseif C then D end if ⑤if A then B elseif C then D else E end if If....Then.....Else 在下面的情况中,您可以使用 If...Then...Else 语句: if i=10 Then msgbox "Hello" i = i+1 end If 在上面的代码中,同样没有 .else.. 语句。我们仅仅让代码在条件为 true 时执行了多项操作。 if i=10 then msgbox "Hello" else msgbox "Goodbye" end If 当条件为 true 时会执行第一段代码,当条件不成立时执行第二段代码(当 i 不等于 10 时)。 if payment="Cash" then msgbox "You are going to pay cash!" elseif payment="Visa" then msgbox "You are going to pay with visa." elseif payment="AmEx" then msgbox "You are going to pay with American Express." else msgbox "Unknown method of payment." end If Select Case select case payment case "Cash" msgbox "You are going to pay cash" case "Visa" msgbox "You are going to pay with visa" case "AmEx" msgbox "You are going to pay with American Express" case Else msgbox "Unknown method of payment" end select 以上代码的工作原理:首先,我们需要一个简单的表达式(常常是一个变量),并且这个表达式会被做一次求值运算。然后,表达式的值会与每个 case 中的值作比较,如果匹配,被匹配的 case 所对应的代码会被执行。 |
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