HTML验证码生成

原创 彭淇  2017-09-05 17:25:18  阅读 2406 次 评论 1 条

如图所示:

HTML验证码生成  js 加载 运行 css 第1张


<!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" >
<meta charset="utf-8">
<head>
<title>飞翔勿扰博客</title>

<style type="text/css">
.code
{
background-image:url(../test2/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">

var code ; //在全局 定义验证码
function createCode()
{ 
code = "";
var codeLength = 6;//验证码的长度
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','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()*61);
code +=selectChar[charIndex];


}
 //alert(code);
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!区分大小写");
createCode();//刷新验证码
}
else
{
alert("www.pengqi.club 提示您:验证码正确");
}

}

</script>
</head>
<body onload="createCode()">
<form action="#">
<input type="text" id="input1" />
<input type="text" onclick="createCode()" readonly="readonly" id="checkCode" class="unchanged" style="width: 80px" title="点击刷新" /><span>区分大小写</span><br /><br/>
<input id="Button1" onclick="validate();" type="button" value="确定" /> 
</br></br>
<a href="http://www.pengqi.club">www.pengqi.club</a>
</form>
</body>
</html>



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  1. 优速
    优速 【县长】  @回复

    可以