JS实现瀑布流布局的实例分析
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2022-03-21 23:03:27
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本文实例为大家分享了JS实现瀑布流布局展示的具体代码，供大家参考，具体内容如下
html部分
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>瀑布流布局</title>
<script src="wallpoll.js"></script>
<link rel="stylesheet" href="wallpoll.css" rel="external nofollow" >
</head>
<body>
<p id="main">
<p class="box">
<p class="pic">
<img src="wallpoll/0.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/0.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/1.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/2.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/3.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/4.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/5.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/6.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/7.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/8.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/9.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/10.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/11.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/12.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/13.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/14.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/15.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/16.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/17.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/18.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/19.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/20.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/21.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/22.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/23.jpg" alt="">
</p>
</p>
<p class="box">
<p class="pic">
<img src="wallpoll/24.jpg" alt="">
</p>
</p>
</p>
</body>
</html>
css部分
*{
padding:0px;
margin:0px;
}
.main{
position:relative;
}
.box{
padding:15px 0 0 10px;
float:left;
}
.pic{
padding:10px;
border: 1px solid #ccc;
border-radius: 5px;
box-shadow: 0 0 5px #ccc;
/*float:left;*/
}
img{
width:170px;
height:auto;
}
JS部分
window.onload=function(){
waterfall('main','box');
var dataInt={"data":[{"src":"0.jpg"},{"src":"1.jpg"},{"src":"2.jpg"},{"src":"3.jpg"},{"src":"4.jpg"}]}
window.onscroll=function(){
if(checkScrollSlide){
for(var i=0;i<dataInt.data.length;i++){
var oparent=document.getElementById("main");
var box=document.createElement("p");
box.className="box";
oparent.appendChild(box);
var pic=document.createElement("p");
pic.className="pic";
box.appendChild(pic);
var img=document.createElement("img");
img.src="wallpoll/"+dataInt.data[i].src;
pic.appendChild(img);
}
}
waterfall('main','box');
}
}
function waterfall(parent,child){
var oparent=document.getElementById(parent);
var boxs=oparent.getElementsByClassName(child);
var boxw=boxs[0].offsetWidth;
var cols=Math.floor(document.documentElement.clientWidth/boxw);
oparent.style.cssText="width:"+cols*boxw+"px;margin:0 auto";
var harr=new Array();
for(var i=0;i<boxs.length;i++){
if(i<cols){
harr.push(boxs[i].offsetHeight);
}else{
var minH=Math.min.apply(null,harr);
var index=getMinhIndex(harr,minH);
boxs[i].style.position="absolute";
boxs[i].style.top=minH+"px";
boxs[i].style.left=boxs[index].offsetLeft+"px";
harr[index]+=boxs[i].offsetHeight;
}
}
}
function getMinhIndex(arr,val){
for(var i in arr){
if(arr[i]===val){
return i;
}
}
}
function checkScrollSlide(){
var oparent=document.getElementById("main");
var boxs=oparent.getElementsByClassName("box");
var lastBox=boxs[boxs.length-1];
var height=lastBox.offsetTop+Math.floor(lastBox.offsetHeight/2);
var scrollHeigth=document.documentElement.scrollTop || document.body.scrollTop;
// console.log(scrollHeigth);
var seeHeigth=document.documentElement.clientHeigth || document.body.clientHeigth;
return seeHeigth+scrollHeigth>height?true:false;
}
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