Js 标签云

转载

mb5fdcae83766b7 2017-08-05 16:52:00

文章标签 html i++ 2d java 3g 文章分类 代码人生

看到网上有那种标签云认为蛮炫的,想自己玩玩

/**

* 云标签

* @author xuyw

* @email xyw10000@163.com

* @date 2014-05-27

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>

<style type="text/css">
body{ font-family:"微软雅黑", Arial, sans-serif;} #main{border:none; background:none;}
body,ul,li,h1,h2,h3,p,form{margin:0;padding:0;}body{background:#fbfbfb;color:#444;font-size:14px;}
a{color:#444;text-decoration:none;}a:hover{color:red;}

/* tagscloud */
#yuntags{width:250px;height:260px;position:relative;font-size:12px;color:#333;margin:20px auto 0;text-align:center;}
#yuntags a{position:absolute;top:0px;left:0px;color:#333;font-family:Arial;text-decoration:none;margin:0 10px 15px 0;line-height:18px;text-align:center;font-size:12px;padding:1px 5px;display:inline-block;border-radius:3px;}
#yuntags a.tagc1{background:#666;color:#fff;}
#yuntags a.tagc2{background:#F16E50;color:#fff;}
#yuntags a.tagc5{background:#006633;color:#fff;}
#yuntags a:hover{color:#fff;background:#0099ff;}
</style>
</head>
<body>

<div id="yuntags">
  <a href="http://image.baidu.com/channel/star?ref=search#all&&null&0" class="tagc1">明星</a>
  <a href="http://user.qzone.qq.com/714115852/infocenter?ptsig=2dvj7jyA7IlnfX-otKXPfswTUrcHMBBP3BEdhR9g3GU_" class="tagc2">帅哥</a>
  <a href="http://www.java.com/zh_CN/" class="tagc5">JAVA</a>
  <a href="http://user.qzone.qq.com/714115852/infocenter?ptsig=2dvj7jyA7IlnfX-otKXPfswTUrcHMBBP3BEdhR9g3GU_" class="tagc2">xuyw<a>
  <a href="http://www.baidu.com/" class="tagc2">银行利率</a>
  <a href="http://www.baidu.com/" class="tagc1">PHP</a>
  <a href="http://www.baidu.com/" class="tagc2">android</a>
  <a href="http://www.baidu.com/" class="tagc5">C</a>
  <a href="http://www.baidu.com/" class="tagc2">C#</a>
  <a href="http://www.baidu.com/" class="tagc2">ORACLE</a>
  <a href="http://www.baidu.com/" class="tagc5">Mysql</a>
  <a href="http://www.baidu.com/" class="tagc2">银行贷款利率表</a>
  <a href="http://www.baidu.com/" class="tagc1">银行存款利率</a>
  <a href="http://www.baidu.com/" class="tagc2">银行利率</a>
  <a href="http://www.baidu.com/" class="tagc5">银行贷款利率</a>
  <a href="http://www.baidu.com/" class="tagc2">银行存款利率<a>
  <a href="http://www.baidu.com/" class="tagc2">银行利率</a>
  <a href="http://www.baidu.com/" class="tagc1">VB</a>
  <a href="http://www.baidu.com/" class="tagc2">银行存款利率</a>
  <a href="http://www.baidu.com/" class="tagc5">银行贷款利率</a>
  <a href="http://www.baidu.com/" class="tagc2">银行利率</a>
  <a href="http://www.baidu.com/" class="tagc2">房贷利率2013</a>
  <a href="http://www.baidu.com/" class="tagc5">银行存款利率表</a>
  <a href="http://www.baidu.com/" class="tagc2">银行贷款利率表</a>
</div>

<script src='tag.js' type="text/javascript"></script>

</body>
</html>

var radius = 90;
var d = 200;
var dtr = Math.PI / 180;
var mcList = [];
var lasta = 1;
var lastb = 1;
var distr = true;
var tspeed = 11;
var size = 200;
var mouseX = 0;
var mouseY = 10;
var howElliptical = 1;
var aA = null;
var oDiv = null;
window.onload=function ()
{
    var i=0;
    var oTag=null;
    oDiv=document.getElementById('yuntags');
    aA=oDiv.getElementsByTagName('a');
    for(i=0;i<aA.length;i++)
    {
        oTag={};        
        aA[i].onmouseover = (function (obj) {
            return function () {
                obj.on = true;
                this.style.zIndex = 9999;
                this.style.color = '#fff';
                this.style.padding = '5px 5px';
                this.style.filter = "alpha(opacity=100)";
                this.style.opacity = 1;
            }
        })(oTag)
        aA[i].onmouseout = (function (obj) {
            return function () {
                obj.on = false;
                this.style.zIndex = obj.zIndex;
                this.style.color = '#fff';
                this.style.padding = '5px';
                this.style.filter = "alpha(opacity=" + 100 * obj.alpha + ")";
                this.style.opacity = obj.alpha;
                this.style.zIndex = obj.zIndex;
            }
        })(oTag)
        oTag.offsetWidth = aA[i].offsetWidth;
        oTag.offsetHeight = aA[i].offsetHeight;
        mcList.push(oTag);
    }
    sineCosine( 0,0,0 );
    positionAll();
    (function () {
            update();
            setTimeout(arguments.callee, 40);
        })();
};
function update()
{
    var a, b, c = 0;
        a = (Math.min(Math.max(-mouseY, -size), size) / radius) * tspeed;
        b = (-Math.min(Math.max(-mouseX, -size), size) / radius) * tspeed;
        lasta = a;
        lastb = b;
        if (Math.abs(a) <= 0.01 && Math.abs(b) <= 0.01) {
            return;
        }
        sineCosine(a, b, c);
        for (var i = 0; i < mcList.length; i++) {
            if (mcList[i].on) {
                continue;
            }
            var rx1 = mcList[i].cx;
            var ry1 = mcList[i].cy * ca + mcList[i].cz * (-sa);
            var rz1 = mcList[i].cy * sa + mcList[i].cz * ca;

            var rx2 = rx1 * cb + rz1 * sb;
            var ry2 = ry1;
            var rz2 = rx1 * (-sb) + rz1 * cb;

            var rx3 = rx2 * cc + ry2 * (-sc);
            var ry3 = rx2 * sc + ry2 * cc;
            var rz3 = rz2;

            mcList[i].cx = rx3;
            mcList[i].cy = ry3;
            mcList[i].cz = rz3;

            per = d / (d + rz3);

            mcList[i].x = (howElliptical * rx3 * per) - (howElliptical * 2);
            mcList[i].y = ry3 * per;
            mcList[i].scale = per;
            var alpha = per;
            alpha = (alpha - 0.6) * (10 / 6);
            mcList[i].alpha = alpha * alpha * alpha - 0.2;
            mcList[i].zIndex = Math.ceil(100 - Math.floor(mcList[i].cz));
        }
        doPosition();
}
function positionAll()
{
    var phi = 0;
    var theta = 0;
    var max = mcList.length;
    for (var i = 0; i < max; i++) {
        if (distr) {
            phi = Math.acos(-1 + (2 * (i + 1) - 1) / max);
            theta = Math.sqrt(max * Math.PI) * phi;
        } else {
            phi = Math.random() * (Math.PI);
            theta = Math.random() * (2 * Math.PI);
        }
        //坐标变换
        mcList[i].cx = radius * Math.cos(theta) * Math.sin(phi);
        mcList[i].cy = radius * Math.sin(theta) * Math.sin(phi);
        mcList[i].cz = radius * Math.cos(phi);

        aA[i].style.left = mcList[i].cx + oDiv.offsetWidth / 2 - mcList[i].offsetWidth / 2 + 'px';
        aA[i].style.top = mcList[i].cy + oDiv.offsetHeight / 2 - mcList[i].offsetHeight / 2 + 'px';
    }
}
function doPosition()
{
    var l = oDiv.offsetWidth / 2;
        var t = oDiv.offsetHeight / 2;
        for (var i = 0; i < mcList.length; i++) {
            if (mcList[i].on) {
                continue;
            }
            var aAs = aA[i].style;
            if (mcList[i].alpha > 0.1) {
                if (aAs.display != '')
                    aAs.display = '';
            } else {
                if (aAs.display != 'none')
                    aAs.display = 'none';
                continue;
            }
            aAs.left = mcList[i].cx + l - mcList[i].offsetWidth / 2 + 'px';
            aAs.top = mcList[i].cy + t - mcList[i].offsetHeight / 2 + 'px';
            //aAs.fontSize=Math.ceil(12*mcList[i].scale/2)+8+'px';
            //aAs.filter="progid:DXImageTransform.Microsoft.Alpha(opacity="+100*mcList[i].alpha+")";
            aAs.filter = "alpha(opacity=" + 100 * mcList[i].alpha + ")";
            aAs.zIndex = mcList[i].zIndex;
            aAs.opacity = mcList[i].alpha;
        }
}
function sineCosine( a, b, c)
{
    sa = Math.sin(a * dtr);
    ca = Math.cos(a * dtr);
    sb = Math.sin(b * dtr);
    cb = Math.cos(b * dtr);
    sc = Math.sin(c * dtr);
    cc = Math.cos(c * dtr);
}