js验证码-简单好用资源-CSDN文库

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js验证码

验证码

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js_yzm.rar （1个子文件）

js_yzm.html 2KB

<html> <head> <style type="text/css"> .code{ background-image:url(111.jpg); font-family:Arial,宋体; font-style:italic; color:green; border:0; padding:2px 3px; letter-spacing:3px; font-weight:bolder; } .unchanged { border:0; } </style> <script language="javascript" type="text/javascript"> var code ; //在全局定义验证码 function createCode(){ code = new Array(); var codeLength = 8;//验证码的长度 var checkCode = document.getElementById("checkCode"); checkCode.value = ""; var selectChar = new Array(2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z'); for(var i=0;i<codeLength;i++) { var charIndex = Math.floor(Math.random()*32); code +=selectChar[charIndex]; } if(code.length != codeLength){ createCode(); } checkCode.value = code; } function validate () { var inputCode = document.getElementById("input1").value.toUpperCase(); if(inputCode.length <=0) { alert("请输入验证码！"); return false; } else if(inputCode == code ){ alert("成功！"); return true; } else { alert("验证码输入错误！"); createCode(); return false; } } </script> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head> <body onLoad="createCode();"> <input type="text" id="input1" /> <input type="button" id="checkCode" class="code" style="width:100px" onClick="createCode()" /> <a href="#" onClick="createCode()">看不清楚</a> <input id="Button1" onClick="validate();" type="button" value="确定" /> <script></script> </body> </html>

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