http://www.shsay.com
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>原生js實現瀑布流</title>
<style type="text/css">
body{
overflow: scroll;
height: 1000px;
}
*{
margin: 0;
padding: 0;
}
#main{
position: relative;
}
.box{
padding: 15px 0 0 15px;
float: left;
}
.pic{
padding: 10px;
border:1px solid #CCC;
border-radius: 5px;
box-shadow: 0 0 5px #ccc;
}
.pic img{
width: 165px;
height: auto;
}
</style>
</head>
<body>
<div id="main">
<div class="box">
<div class="pic">
<img src="images/1.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/2.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/3.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/4.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/5.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/6.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/7.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/8.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/9.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/10.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/9.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/8.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/7.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/6.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/5.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/4.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/3.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/2.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/1.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/5.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/6.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/7.jpg">
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/8.jpg">
</div>
</div>
</div>
<script type="text/javascript">
window.οnlοad=function(){
waterfall('main','box');
var dataInt={"data":[{"src":'1.jpg'},{"src":'2.jpg'},{"src":'3.jpg'},{"src":'4.jpg'}]}
//滾動添加
window.οnscrοll=function(){
if(checkScrollSlide()){
var oParent=document.getElementById('main')
//將數據庫渲染到當前頁面的尾部
for(var i=0;i<dataInt.data.length;i++){
var oBox=document.createElement('div');
oBox.className='box';
oParent.appendChild(oBox);
var oPic=document.createElement('div');
oPic.className='pic';
oBox.appendChild(oPic);
var oImg=document.createElement('img');
oImg.src="images/"+dataInt.data[i].src;
oPic.appendChild(oImg);
}
waterfall('main','box');
}
}
}
function waterfall(parent,box){
//將main下的所有class爲box的元素取出來
var oParent=document.getElementById(parent);
var oBoxs=getByClass(oParent,box);
//計算整個頁面的顯示雷氏（頁面/box的寬）
var oBoxW=oBoxs[0].offsetWidth;
var cols=Math.floor(document.documentElement.clientWidth/oBoxW);
//console.log(cols);
//設置main的寬
oParent.style.cssText='width:'+oBoxW*cols+'px;margin:0 auto';
var hArr=[];//存放每一列高度
for(var i=0;i<oBoxs.length;i++){
if(i<cols){
hArr.push(oBoxs[i].offsetHeight);
}
else{
var minH=Math.min.apply(null,hArr);
var index=getMinhIndex(hArr,minH);
oBoxs[i].style.position="absolute";
oBoxs[i].style.top=minH+'px';
oBoxs[i].style.left=oBoxW*index+'px';
hArr[index]+=oBoxs[i].offsetHeight;
}
}
}
//根據Class獲取元素
function getByClass(parent,clsName){
var boxArr=new Array(),//用來存儲獲取到的所有class爲Box的元素
oElements=parent.getElementsByTagName('*');
for(var i=0;i<oElements.length;i++){
if (oElements[i].className==clsName) {
boxArr.push(oElements[i]);
}
}
return boxArr;
}
function getMinhIndex(arr,val){
for(var i in arr){
if(arr[i]==val){
return i;
}
}
}
//檢測是否具備了滾動條件
function checkScrollSlide(){
var oParent=document.getElementById('main');
var oBoxs=getByClass(oParent,'box');
var lastBoxH=oBoxs[oBoxs.length-1].offsetTop + Math.floor(oBoxs[oBoxs.length-1].offsetHeight/2);
var scrollTop=document.body.scrollTop || document.documentElement.scrollTop;
var height=document.body.clientHeight || document.documentElement.clientHeight;
return (lastBoxH<scrollTop+height)?true:false;
}
</script>
</body>
</html>
