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<!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> <title>无标题页</title> <style type="text/css"> .code { background-image:url(code.jpg); font-family:Arial; font-style:italic; color:Red; border:0; padding:2px 3px; letter-spacing:3px; font-weight:bolder; } .unchanged { border:0; } </style> <script language="javascript" type="text/javascript"> //在全局 定义验证码var code ; function createCode(){code = "";//验证码的长度var codeLength = 6;var checkCode = document.getElementById("checkCode");var selectChar = new Array(0,1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');//所有候选组成验证码的字符，当然也可以用中文的for(var i=0;i<codeLength;i++){var charIndex = Math.floor(Math.random()*36);code +=selectChar[charIndex]; }if(checkCode){checkCode.className="code";checkCode.value = code;}}function validate (){var inputCode = document.getElementById("input1").value;if(inputCode.length <=0){alert("请输入验证码！");}else if(inputCode != code ){alert("验证码输入错误！");createCode();//刷新验证码}else{alert("^-^ OK");}} </script></head><body ><form action="#"> <input type="text" id="input1" /> <input type="text" readonly="readonly" id="checkCode" class="unchanged" style="width: 80px" /><br /> <input id="Button1" type="button" value="确定" /> </form></body></html> |
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