基于JavaScript实现瀑布流布局

2019-11-20 10:48:55

字体：大中小

来源：转载

供稿：网友

本文实例讲解了原生JavaScript实现瀑布流布局详细代码，分享给大家供大家参考，具体内容如下

效果图：

具体代码：

HTML

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>Document</title>  <link rel="stylesheet" type="text/css" href="css/style.css">  <script type="text/javascript" src="js/app.js"></script></head><body>  <div id="container">    <div class="box">       <div class="box_img"> <img src="images/1.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/2.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/3.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/4.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/5.jpg" alt=""></div>    </div>  <div class="box">       <div class="box_img"> <img src="images/6.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/7.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/8.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/9.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/10.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/1.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/2.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/3.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/4.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/5.jpg" alt=""></div>    </div>  <div class="box">       <div class="box_img"> <img src="images/6.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/7.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/8.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/9.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/10.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/1.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/2.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/3.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/4.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/5.jpg" alt=""></div>    </div>  <div class="box">       <div class="box_img"> <img src="images/6.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/7.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/8.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/9.jpg" alt=""></div>    </div>    <div class="box">       <div class="box_img"> <img src="images/10.jpg" alt=""></div>    </div>  </div></body></html>

CSS代码：

*{   margin: 0px;   padding: 0px;}#container{   position: relative;}.box{   padding: 5px;   float: left;}.box_img{   padding: 5px;   border: 1px solid #cccccc;   box-shadow: 0 0 5px #ccc;   border-radius: 5px;}.box_img img{   width: 150px;   height:auto;}

js代码：

window.onload=function(){   imgLocation("container","box");   var imgData={     "data":[       {"src":"2.jpg"},       {"src":"3.jpg"},       {"src":"4.jpg"},       {"src":"5.jpg"},       {"src":"6.jpg"},       {"src":"7.jpg"},       {"src":"8.jpg"},     ]   };   window.onscroll=function(){    if (checkFlag()) {      var cparent=document.getElementById("container");      for (var i = 0; i < imgData.data.length; i++) {         var ccontent=document.createElement("div");         ccontent.className="box";         cparent.appendChild(ccontent);         var boximg=document.createElement("div");         boximg.className="box_img";         ccontent.appendChild(boximg);         var img=document.createElement("img");         img.src="images/"+imgData.data[i].src;         boximg.appendChild(img);      }        imgLocation("container","box");    }   }}function checkFlag(){   var cparent=document.getElementById("container");   var ccontent=getChildnode(cparent,"box");   var lastContentHeight=ccontent[ccontent.length-1].offsetTop;   var scrollTop=document.documentElement.scrollTop||document.body.scrollTop;   var pageHeight=document.documentElement.clientHeight||document.body.clientHeight;   if (lastContentHeight<scrollTop+pageHeight) {    return true;   }}function imgLocation(parent,content){     var cparent=document.getElementById(parent);     var ccontent=getChildnode(cparent,content);     var imgWidth=ccontent[0].offsetWidth;     var cols=Math.floor(document.documentElement.clientWidth/imgWidth);     cparent.style.cssText="width:"+imgWidth*cols+"px;margin:0 auto";   //把第二排的左起第一张图片放到第一排高度最小的那张下面     var imgHeightArr=[];     for (var i = 0; i < ccontent.length; i++) {        if (i<cols) {            imgHeightArr[i]=ccontent[i].offsetHeight;                  }else{            var minHeight=Math.min.apply(null,imgHeightArr);            var minHeightIndex=getMinHeightLoc(imgHeightArr,minHeight);            console.log("minHeightIndex"+minHeightIndex);      ccontent[i].style.position="absolute";      ccontent[i].style.top=minHeight+"px";      ccontent[i].style.left=ccontent[minHeightIndex].offsetLeft+"px";      imgHeightArr[minHeightIndex]=imgHeightArr[minHeightIndex]+ccontent[i].offsetHeight;        console.log(imgHeightArr[i]);        console.log("高度最低:"+minHeight);        }    }}function getChildnode(parent,content){   var contentArr=[];   var allcontent=parent.getElementsByTagName("*");  for (var i = 0; i < allcontent.length; i++) {   if(allcontent[i].className==content){      contentArr.push(allcontent[i]);   }  };  return contentArr;}function getMinHeightLoc(imgHeightArr,minHeight){   for(var i in imgHeightArr){      if (imgHeightArr[i]==minHeight) {       return i;      }   }}

希望本文所述对大家学习javascript程序设计有所帮助。

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