<!DOCTYPE html>
<html>
<meta charset="UTF-8"/>
<head> <!--提供有关文档内容和标注信息-->
<!--<meta charset="UTF-8">
<title>图片练习</title>-->
</head>
<body onload="start()">
<p align="center" ><span id="code" ></span><a href="#" onclick="creat()">看不清 换一张</a>
</p>
</body>
<script type="text/javascript">
function creat(){
var data=['a','b','c','d','e','f','g','1','2'];//保存验证码内容
var res="";
for(var i=0;i<4;++i){
var a= Math.floor( Math.random()*data.length);//获取0-length随机整数
res+=data[a];
}
var temp= document.getElementById("code");
temp.innerHTML=res;
}
function start(){
creat();
}
</script>
</html>
<html>
<meta charset="UTF-8"/>
<head> <!--提供有关文档内容和标注信息-->
<!--<meta charset="UTF-8">
<title>图片练习</title>-->
</head>
<body onload="start()">
<p align="center" ><span id="code" ></span><a href="#" onclick="creat()">看不清 换一张</a>
</p>
</body>
<script type="text/javascript">
function creat(){
var data=['a','b','c','d','e','f','g','1','2'];//保存验证码内容
var res="";
for(var i=0;i<4;++i){
var a= Math.floor( Math.random()*data.length);//获取0-length随机整数
res+=data[a];
}
var temp= document.getElementById("code");
temp.innerHTML=res;
}
function start(){
creat();
}
</script>
</html>