下载代码
html代码：
<form method="post" name=myform> 姓 名：<input type="text" name="name" value=""><br> 学 号：<input type="text" name="num" value=""><br> 。。。：<input type="text" name="aaa" value=""><br> 。。。：<input type="text" name="bbb" value=""><br> 验证码：<img src="vcode/c.asp" onclick="this.src=this.src" title="点击图片可以更改验证码" height="13" width="52"> <input type="text" size="5" name="C" autocomplete="off" style="ime-mode:disabled;" value=""> <input type="submit" value="提交"> </form>
asp代码：
<% c = Request.form("c") '如果可以输入小写的数字，请把下面三行注释掉 for ii = 0 to 9 c = Replace(c,Cstr(ii),"") next c = Replace(c,"零","0") c = Replace(c,"一","1") c = Replace(c,"二","2") c = Replace(c,"三","3") c = Replace(c,"四","4") c = Replace(c,"五","5") c = Replace(c,"六","6") c = Replace(c,"七","7") c = Replace(c,"八","8") c = Replace(c,"九","9") if Cstr(c) <> Cstr(Session("validateCode")) then Response.write ("验证码不正确") Response.end end if %>
原理请参考这里：http://www.blueidea.com/bbs/archivecontent.asp?id=1096040