瀑布流
2016-12-02 本文已影响0人
编程师小刘
<style>
*{
margin:0;
padding:0;
list-style: none;
}
ul{
width: 200px;
border:1px solid #000;
float: left;
margin: 10px;
}
li{
width: 100px;
height: 100px;
background: #6cf;
margin: 10px;
}
</style>
<script>
function rnd(n,m){
return parseInt(Math.random()*(m-n))+n;
}
function createLI(){
var oLi=document.createElement('li');
oLi.style.height=rnd(100,500)+'px';
oLi.style.background='rgb('+rnd(0,256)+','+rnd(0,2560)+','+rnd(0,256)+')';
return oLi;
}
window.onload=function(){
var aUl=document.getElementsByTagName('ul');
function createLI20(){
for(var i=0;i<20;i++){
var oLi=createLI();
var arrUl=[];
for(var j=0;j<aUl.length;j++){
arrUl.push(aUl[j]);
}
arrUl.sort(function(n1,n2){
return n1.offsetHeight-n2.offsetHeight;
});
arrUl[0].appendChild(oLi)
}
}
createLI20();
window.onscroll=function(){
var clientH=document.documentElement.clientHeight;
var scrollTop=document.documentElement.scrollTop||document.body.scrollTop;
var clientBottom=clientH+scrollTop;
var pageHeight=document.documentElement.scrollHeight;
if((pageHeight-500)<clientBottom){
createLI20();
}
}
}
</script>
</head>
<body>
<ul>
<li></li>
</ul>
<ul></ul>
<ul></ul>
</body>
