The examples in this article share with you the js waterfall flow layout learning materials for your reference. The specific content is as follows
Features: equal width and unequal height.
Implementation method: Javascript/Jquery/CSS3 multi-column layout.
Sample website: Huaban.com -->Category
1. JS to implement waterfall flow
index.html: Page structure
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>瀑布流布局</title>
<link rel="stylesheet" href="styles/layout.css">
</head>
<body>
<div id="main">
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/0.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/1.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/2.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/3.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/4.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/5.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/6.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/7.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/8.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/9.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/10.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/11.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/12.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/13.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/14.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/15.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/16.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/17.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/18.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/19.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/20.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/21.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/22.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/23.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/24.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/25.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/26.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/27.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/28.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/29.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/30.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/31.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/32.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/33.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/34.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/35.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/36.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/37.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/38.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/39.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/40.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/41.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/42.jpg" class="lazy" alt=""></div></div>
<div><div><img src="/static/imghwm/default1.png" data-src="../waterFall/pic/43.jpg" class="lazy" alt=""></div></div>
</div>
<script src="scripts/waterfall.js"></script>
</body>
</html>layout. css: page element style
*{
pdding:0;
margin:0;
}
div#main{
position: relative;
}
div.box{
padding:15px 0 0 15px;
float: left;
}
div.pic{
padding:10px;
border:1px solid #ccc;
border-radius:5px;
box-shadow: 0 0 5px #ccc;
}
.pic img{
height:auto;
width:165px;
}waterfall.js
window.onload=function(){
waterFall('main','box');
//模拟后台相应数据json
var dataInt={
"data":
[
{"src":"0.jpg"},
{"src":"1.jpg"},
{"src":"2.jpg"},
{"src":"3.jpg"},
{"src":"4.jpg"},
{"src":"5.jpg"},
{"src":"6.jpg"}
]
}
window.onscroll=function(){
if(checkScrollSlide){
//将数据块渲染到当前页面的尾部
var oParent=document.getElementById("main");
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 img=document.createElement("img");
img.setAttribute("src",dataInt.data[i]);
img.src="pic/"+dataInt.data[i].src;
oPic.appendChild(img);
}
dataInt=null;//清空数据块，防止无限加载
waterFall('main','box');//对页面新元素进行布局渲染
}
}
}
function waterFall(parent,box){
//将main下的class为box的所有元素取出来
var oParent=document.getElementById(parent);
var oBoxs=getByClass(oParent,box);
console.log(oBoxs.length);
//计算整个页面显示的列数（页面宽/box宽）
var oBoxW=oBoxs[0].offsetWidth;
// console.log(oBoxW);
var cols=Math.floor(document.documentElement.clientWidth/oBoxW);
// console.log(cols);
//设置main的宽
oParent.style.cssText="width:"+oBoxW*cols+"px;margin:0 auto;"
var hArr=[];//存放每列高度的数组
for(var i=0;i<oBoxs.length;i++){
if(i<cols){
hArr.push(oBoxs[i].offsetHeight);
}else{
var minH=Math.min.apply(null,hArr);//获取当前数组最小高度值
// console.log(minH);
var index=getMinhIndex(hArr,minH);//获取数组最小高度的索引
//console.log(index);
oBoxs[i].style.position="absolute";//将之后的图片依次绝对定位
oBoxs[i].style.top=minH+"px";
oBoxs[i].style.left=index*oBoxW+"px";//计算新图片所在的位置并赋值
hArr[index]+=oBoxs[i].offsetHeight;//变化数组列的高度值，因为加上了一张图片
}
//console.log(hArr);
}
}
//根据class获取元素
function getByClass(parent,clsName){
var boxArr=new Array(),//用来存储获取到的所有class为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=0;i<arr.length;i++){
if(arr[i]==val){
return i;
}
}
}
//检测是否具备滚动条加载数据块条件
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;//混杂模式和标准模式下的scrollTop获取
//console.log(scrollTop);
var height=document.body.clientHeight||document.documentElement.clientHeight;//混杂模式和标准模式下的浏览器窗口高度获取
return (lastBoxH<scrollTop+height)?true:false;//检测最后一个box高度是否小于滚动高度+窗口高度，返回布尔值
}2. JQuery
$( window ).on( "load", function(){
waterfall('main','pin');
var dataInt={'data':[{'src':'1.jpg'},{'src':'2.jpg'},{'src':'3.jpg'},{'src':'4.jpg'}]};
window.onscroll=function(){
if(checkscrollside()){
$.each( dataInt.data, function( index, value ){
var $oPin = $('<div>').addClass('pin').appendTo( $( "#main" ) );
var $oBox = $('<div>').addClass('box').appendTo( $oPin );
$('<img alt="Learn more about js waterfall flow layout" >').attr('src','./images/' + $( value).attr( 'src') ).appendTo($oBox);
});
waterfall();
};
}
});
/*
parend 父级id
pin 元素id
*/
function waterfall(parent,pin){
var $aPin = $( "#main>div" );
var iPinW = $aPin.eq( 0 ).width();// 一个块框pin的宽
var num = Math.floor( $( window ).width() / iPinW );//每行中能容纳的pin个数【窗口宽度除以一个块框宽度】
//oParent.style.cssText='width:'+iPinW*num+'px;ma rgin:0 auto;';//设置父级居中样式：定宽+自动水平外边距
$( "#main" ).css({
'width:' : iPinW * num,
'margin': '0 auto'
});
var pinHArr=[];//用于存储 每列中的所有块框相加的高度。
$aPin.each( function( index, value ){
var pinH = $aPin.eq( index ).height();
if( index < num ){
pinHArr[ index ] = pinH; //第一行中的num个块框pin 先添加进数组pinHArr
}else{
var minH = Math.min.apply( null, pinHArr );//数组pinHArr中的最小值minH
var minHIndex = $.inArray( minH, pinHArr );
$( value ).css({
'position': 'absolute',
'top': minH + 15,
'left': $aPin.eq( minHIndex ).position().left
});
//数组 最小高元素的高 + 添加上的aPin[i]块框高
pinHArr[ minHIndex ] += $aPin.eq( index ).height() + 15;//更新添加了块框后的列高
}
});
}
function checkscrollside(){
var $aPin = $( "#main>div" );
var lastPinH = $aPin.last().get(0).offsetTop + Math.floor($aPin.last().height()/2);//创建【触发添加块框函数waterfall()】的高度：最后一个块框的距离网页顶部+自身高的一半(实现未滚到底就开始加载)
var scrollTop = $( window ).scrollTop()//注意解决兼容性
var documentH = $( document ).height();//页面高度
return (lastPinH < scrollTop + documentH ) ? true : false;//到达指定高度后 返回true，触发waterfall()函数
}3. CSS multi-column layout
.container{
-webkit-column-width:160px;
-moz-column-width:160px;
-webkit-column-gap:5px;
-moz-column-gap:5px;
}
/*数据块 砖块*/
.container div{width:160px;
margin:4px 0;}[css3 and js implementation Comparison of methods】
--css3 method--
1: No calculation required, the browser automatically calculates, just set 1 column width, high performance
2: Column width changes with the browser width size Change, the user experience is not good;
3: The pictures are sorted in vertical order, disrupting the order of picture display
4. Picture loading still requires js
--js method--
js implemented waterfall Streaming does not have the above shortcomings, but the performance is relatively poor!
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