简单的随机标签云
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<title>随机标签云</title>
<style type="text/css">
*{
margin:0;
padding:0
}
a{
text-decoration:none
}
#wrap{
400px;
margin:auto
}
</style>
<script type="text/javascript">
window.onload=function(){
var obox=document.getElementById("wrap");
var obj=obox.getElementsByTagName("a");
//随机方法
function rand(num){
return parseInt(Math.random()*num+1);
}
//随机颜色值
function randomcolor(){
var str=Math.ceil(Math.random()*16777215).toString(16);
if(str.length<6){
str="0"+str;
}
return str;
}
//循环
for( len=obj.length,i=len;i--;){
obj[i].className="color"+rand(5);
obj[i].style.zIndex=rand(5);
obj[i].style.fontSize=rand(12)+12+"px";
// obj[i].style.background="#"+randomcolor();
obj[i].style.color="#"+randomcolor();
obj[i].onmouseover=function(){
this.style.background="#"+randomcolor();
}
obj[i].onmouseout=function(){
this.style.background="none";
}
}
}
</script>
</head>
<body>
<div id="wrap">
<a href="#">web标准学习</a>
<a href="#">css</a>
<a href="#">javascript</a>
<a href="#">html5</a>
<a href="#">canvas</a>
<a href="#">video</a>
<a href="#">audio</a>
<a href="#">jQuery</a>
<a href="#">jQuerymobile</a>
<a href="#">flash</a>
<a href="#">firefox</a>
<a href="#">chrome</a>
<a href="#">opera</a>
<a href="#">IE9</a>
<a href="#">css3.0</a>
<a href="#">andriod</a>
<a href="#">apple</a>
<a href="#">google</a>
<a href="#">jobs</a>
</div>
</body>
</html>
这个的算法较为简单（偶能看得懂 orz....），但也基本上实现了要求
还有一个类似QQ好友印象的标签，有叠加效果，具体移步：http://www.xiaoqiang.org/javascript/tag-flag.html