今天上学校的图书馆，看到了一个好玩的东西，特意百度了下，发现叫做“标签球”，效果图为：

直接代码如下：

CSS:

#div1 {position:relative; width:350px; height:350px; border:1px solid #000; margin: 20px auto 0; }

#div1 a {position:absolute; top:0px; left:0px; font-family: Microsoft YaHei; color:#000; font-weight:bold; text-decoration:none; padding: 3px 6px; }

#div1 a:hover {border: 1px solid #eee; background: #FFF; }

#div1 .blue {color:blue;}

#div1 .red {color:red;}

#div1 .green {color:green;}

HTML:

JS

$(document).ready(function() {

$("#div1").windstagball({

radius:120,

speed:10

});

});

首先得写好布局，最外层div样式position设置为relative

内层元素position为absolute，这样才能形成效果，top为0，left为0

先导入jquery文件，再导入相应的插件文件

获取$("#xxx")元素，并调用windstagball()函数，radius是标签球的变径大小，speed顾名思义就是运动的速度。

附上js插件

var radius = 120;

var dtr = Math.PI/180;

var d=300;

var mcList = [];

var active = false;

var lasta = 1;

var lastb = 1;

var distr = true;

var tspeed=10;

var size=250;

var mouseX=0;

var mouseY=0;

var howElliptical=1;

var aA=null;

var oDiv=null;

window.οnlοad=function ()

{

var i=0;

var oTag=null;

oDiv=document.getElementById('div1');

aA=oDiv.getElementsByTagName('a');

for(i=0;i

{

oTag={};

oTag.offsetWidth=aA[i].offsetWidth;

oTag.offsetHeight=aA[i].offsetHeight;

mcList.push(oTag);

}

sineCosine( 0,0,0 );

positionAll();

oDiv.οnmοuseοver=function ()

{

active=true;

};

oDiv.οnmοuseοut=function ()

{

active=false;

};

oDiv.οnmοusemοve=function (ev)

{

var oEvent=window.event || ev;

mouseX=oEvent.clientX-(oDiv.offsetLeft+oDiv.offsetWidth/2);

mouseY=oEvent.clientY-(oDiv.offsetTop+oDiv.offsetHeight/2);

mouseX/=5;

mouseY/=5;

};

setInterval(update, 30);

};

function update()

{

var a;

var b;

if(active)

{

a = (-Math.min( Math.max( -mouseY, -size ), size ) / radius ) * tspeed;

b = (Math.min( Math.max( -mouseX, -size ), size ) / radius ) * tspeed;

}

else

{

a = lasta * 0.98;

b = lastb * 0.98;

}

lasta=a;

lastb=b;

if(Math.abs(a)<=0.01 && Math.abs(b)<=0.01)

{

return;

}

var c=0;

sineCosine(a,b,c);

for(var j=0;j

{

var rx1=mcList[j].cx;

var ry1=mcList[j].cy*ca+mcList[j].cz*(-sa);

var rz1=mcList[j].cy*sa+mcList[j].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[j].cx=rx3;

mcList[j].cy=ry3;

mcList[j].cz=rz3;

per=d/(d+rz3);

mcList[j].x=(howElliptical*rx3*per)-(howElliptical*2);

mcList[j].y=ry3*per;

mcList[j].scale=per;

mcList[j].alpha=per;

mcList[j].alpha=(mcList[j].alpha-0.6)*(10/6);

}

doPosition();

depthSort();

}

function depthSort()

{

var i=0;

var aTmp=[];

for(i=0;i

{

aTmp.push(aA[i]);

}

aTmp.sort

(

function (vItem1, vItem2)

{

if(vItem1.cz>vItem2.cz)

{

return -1;

}

else if(vItem1.cz

{

return 1;

}

else

{

return 0;

}

}

);

for(i=0;i

{

aTmp[i].style.zIndex=i;

}

}

function positionAll()

{

var phi=0;

var theta=0;

var max=mcList.length;

var i=0;

var aTmp=[];

var oFragment=document.createDocumentFragment();

//随机排序

for(i=0;i

{

aTmp.push(aA[i]);

}

aTmp.sort

(

function ()

{

return Math.random()<0.5?1:-1;

}

);

for(i=0;i

{

oFragment.appendChild(aTmp[i]);

}

oDiv.appendChild(oFragment);

for( var i=1; i

if( distr )

{

phi = Math.acos(-1+(2*i-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-1].cx = radius * Math.cos(theta)*Math.sin(phi);

mcList[i-1].cy = radius * Math.sin(theta)*Math.sin(phi);

mcList[i-1].cz = radius * Math.cos(phi);

aA[i-1].style.left=mcList[i-1].cx+oDiv.offsetWidth/2-mcList[i-1].offsetWidth/2+'px';

aA[i-1].style.top=mcList[i-1].cy+oDiv.offsetHeight/2-mcList[i-1].offsetHeight/2+'px';

}

}

function doPosition()

{

var l=oDiv.offsetWidth/2;

var t=oDiv.offsetHeight/2;

for(var i=0;i

{

aA[i].style.left=mcList[i].cx+l-mcList[i].offsetWidth/2+'px';

aA[i].style.top=mcList[i].cy+t-mcList[i].offsetHeight/2+'px';

aA[i].style.fontSize=Math.ceil(12*mcList[i].scale/2)+8+'px';

aA[i].style.filter="alpha(opacity="+100*mcList[i].alpha+")";

aA[i].style.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);

}