三种方式实现瀑布流布局

2019-11-19 17:39:25

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来源：转载

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分别使用javascript，jquery，css实现瀑布流布局：

第一种方式：使用JavaScript：

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>瀑布流布局</title><style>*{padding:0;margin:0;}.clearfix:after,.clearfix:before {content: " ";display: table;}.clearfix:after {clear: both;}.main {position: relative;-webkit-column-width: 210px;-moz-column-width: 210px;-webkit-column-gap: 5px;-moz-column-gap: 5px;}.box {float: left;padding: 15px 0 0 15px;}.box .pic {width: 180px;height: auto;padding: 10px;border-radius: 5px;box-shadow: 0 0 5px #cccccc;border: 1px solid #cccccc;}.box .pic img {display: block;width: 100%;}</style></head><body><div class="main clearfix" id="main"><div class="box"><div class="pic"><img src="./images/0.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/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/11.jpg"></div></div><div class="box"><div class="pic"><img src="./images/12.jpg"></div></div><div class="box"><div class="pic"><img src="./images/13.jpg"></div></div><div class="box"><div class="pic"><img src="./images/14.jpg"></div></div><div class="box"><div class="pic"><img src="./images/15.jpg"></div></div><div class="box"><div class="pic"><img src="./images/16.jpg"></div></div><div class="box"><div class="pic"><img src="./images/17.jpg"></div></div><div class="box"><div class="pic"><img src="./images/18.jpg"></div></div><div class="box"><div class="pic"><img src="./images/19.jpg"></div></div><div class="box"><div class="pic"><img src="./images/20.jpg"></div></div><div class="box"><div class="pic"><img src="./images/21.jpg"></div></div><div class="box"><div class="pic"><img src="./images/22.jpg"></div></div><div class="box"><div class="pic"><img src="./images/23.jpg"></div></div><div class="box"><div class="pic"><img src="./images/24.jpg"></div></div><div class="box"><div class="pic"><img src="./images/25.jpg"></div></div><div class="box"><div class="pic"><img src="./images/26.jpg"></div></div><div class="box"><div class="pic"><img src="./images/27.jpg"></div></div><div class="box"><div class="pic"><img src="./images/28.jpg"></div></div><div class="box"><div class="pic"><img src="./images/29.jpg"></div></div><div class="box"><div class="pic"><img src="./images/25.jpg"></div></div><div class="box"><div class="pic"><img src="./images/26.jpg"></div></div><div class="box"><div class="pic"><img src="./images/27.jpg"></div></div><div class="box"><div class="pic"><img src="./images/28.jpg"></div></div><div class="box"><div class="pic"><img src="./images/29.jpg"></div></div></div><script>window.onload = function(){waterfall('main','box');//模拟json数据var dataJson = {'data': [{'src':'30.jpg'},{'src':'31.jpg'},{'src':'32.jpg'},{'src':'33.jpg'},{'src':'34.jpg'},{'src':'35.jpg'},{'src':'36.jpg'},{'src':'37.jpg'},{'src':'38.jpg'},{'src':'39.jpg'},{'src':'40.jpg'},{'src':'41.jpg'},{'src':'42.jpg'},{'src':'43.jpg'},{'src':'44.jpg'},{'src':'45.jpg'}]};//监听scroll事件window.onscroll = function(){var isPosting = false;if(checkScollSlide('main','box') && !isPosting){var oParent = document.getElementById('main');for(var i in dataJson.data){isPosting = true;var oBox = document.createElement('div');oBox.className = 'box';oBox.innerHTML = '<div class="pic"><img src="./images/'+dataJson.data[i].src+'"></div>';oParent.appendChild(oBox);}isPosting = false;waterfall('main','box');}}}/** parent 父元素id clsName 块元素类*/function waterfall(parent,clsName){//获取父元素var oParent = document.getElementById(parent),//获取所有boxaBoxArr = oParent.getElementsByClassName(clsName),//单个box宽度iBoxW = aBoxArr[0].offsetWidth,// 列数cols = Math.floor(document.documentElement.clientWidth / iBoxW);oParent.style.cssText = 'width:'+iBoxW*cols+'px;margin:0 auto;';//储存所有的高度var hArr = [];for(var i = 0; i < aBoxArr.length; i++){if(i < cols){hArr[i] = aBoxArr[i].offsetHeight;}else{//获取hArr最小值var minH = Math.min.apply(null,hArr),// hArr最小值索引indexminHIndex = getMinHIndex(hArr,minH);aBoxArr[i].style.cssText = 'position:absolute;top:'+minH+'px;left:'+aBoxArr[minHIndex].offsetLeft+'px;';//添加元素之后更新hArrhArr[minHIndex] += aBoxArr[i].offsetHeight;}}}//获取最小值索引function getMinHIndex(arr,val){for(var i in arr){if(arr[i] == val){return i;}}}//检查是否满足加载数据条件,parent 父元素id clsName 块元素类function checkScollSlide(parent,clsName){var oParent = document.getElementById(parent),aBoxArr = oParent.getElementsByClassName(clsName),// 最后一个box元素的offsetTop+高度的一半lastBoxH = aBoxArr[aBoxArr.length - 1].offsetTop + aBoxArr[aBoxArr.length - 1].offsetHeight / 2,//兼容js标准模式和混杂模式scrollTop = document.documentElement.scrollTop || document.body.scrollTop,height = document.documentElement.clientHeight || document.body.clientHeight;return lastBoxH < scrollTop + height ? true : false;}</script></body></html>

第二种方式：使用jquery：(html结构跟css同上)

$( window ).on( "load", function(){ waterfall('main','box'); //模拟数据json var dataJson = {'data': [{'src':'30.jpg'},{'src':'31.jpg'},{'src':'32.jpg'},{'src':'33.jpg'},{'src':'34.jpg'},{'src':'35.jpg'},{'src':'36.jpg'},{'src':'37.jpg'},{'src':'38.jpg'},{'src':'39.jpg'},{'src':'40.jpg'},{'src':'41.jpg'},{'src':'42.jpg'},{'src':'43.jpg'},{'src':'44.jpg'},{'src':'45.jpg'}]}; window.onscroll=function(){ var isPosting = false; if(checkscrollside('main','box') && !isPosting){  isPosting = true;  $.each(dataJson.data,function(index,dom){  var $box = $('<div class="box"></div>');  $box.html('<div class="pic"><img src="./images/'+$(dom).attr('src')+'"></div>');  $('#main').append($box);  waterfall('main','box');  isPosting = false;  }); } }});/* parend 父级id clsName 元素class */function waterfall(parent,clsName){ var $parent = $('#'+parent);//父元素 var $boxs = $parent.find('.'+clsName);//所有box元素 var iPinW = $boxs.eq( 0 ).width()+15;// 一个块框box的宽 var cols = Math.floor( $( window ).width() / iPinW );//列数 $parent.width(iPinW * cols).css({'margin': '0 auto'}); var pinHArr=[];//用于存储 每列中的所有块框相加的高度。 $boxs.each( function( index, dom){ if( index < cols ){  pinHArr[ index ] = $(dom).height(); //所有列的高度 }else{  var minH = Math.min.apply( null, pinHArr );//数组pinHArr中的最小值minH  var minHIndex = $.inArray( minH, pinHArr );  $(dom).css({  'position': 'absolute',  'top': minH + 15,  'left': $boxs.eq( minHIndex ).position().left  });  //添加元素后修改pinHArr  pinHArr[ minHIndex ] += $(dom).height() + 15;//更新添加了块框后的列高 } });}//检验是否满足加载数据条件，即触发添加块框函数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)function checkscrollside(parent,clsName){ //最后一个块框 var $lastBox = $('#'+parent).find('.'+clsName).last(), lastBoxH = $lastBox.offset().top + $lastBox.height()/ 2, scrollTop = $(window).scrollTop(), documentH = $(document).height(); return lastBoxH < scrollTop + documentH ? true : false;}

第三种方式：使用css：(html结构同上)

.clearfix:after,.clearfix:before { content: " "; display: table;}.clearfix:after { clear: both;}.main { position: relative; [color=#ff0000]-webkit-column-width: 210px; -moz-column-width: 210px; -webkit-column-gap: 5px; -moz-column-gap: 5px;[/color]}.box { float: left; padding: 15px 0 0 15px;}.box .pic { width: 180px; height: auto; padding: 10px; border-radius: 5px; box-shadow: 0 0 5px #cccccc; border: 1px solid #cccccc;}.box .pic img { display: block; width: 100%;}

瀑布流实现方式比较：

Javascript原生方式/jquery方式

1、需要计算，列数 = 浏览器窗口宽度/图片宽度，图片定位是根据每一列的高度计算下来图片的位置；

2、图片排序是按照图片计算的位置横向排列，位置是计算出来的，比较规范

Css方式

1、不需要计算，浏览器自动计算，只需设置列宽，性能高；

2、列宽随着浏览器窗口大小进行改变，用户体验不好；

3、图片排序按照垂直顺序排列，打乱图片显示顺序；

4、图片加载还是依靠javascript/jquery实现

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