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  • 瀑布流布局

    实现瀑布流的要点：

    （1）等宽不等高

    （2）可以利用懒加载

    一、利用纯JS方式实现瀑布流：

    HTML文件如下：

    <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>瀑布流布局</title>
    <link href="index.css" rel="stylesheet" type="text/css">
    <script src="index.js" type="text/javascript"></script>
</head>
<body>
  <div 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>
</body>
</html>

    2、CSS文件内容：

    /**
 * Created by heshan on 2017/4/19.
 */
window.onload=function () {
    var dataInt={"data":[{"src":"P_00.jpg"},{"src":"P_01.jpg"},{"src":"P_02.jpg"},{"src":"P_03.jpg"},{"src":"P_05.jpg"},{"src":"P_06.jpg"},{"src":"P_07.jpg"}]};
   window.onscroll=lazyLoad;
    function lazyLoad() {
    var oParent=document.getElementById('main');
    var oBoxs=getByClass(oParent,"div");
    for(var i=0;i<dataInt.data.length;i++)
    {
        var lastHeight=oBoxs[oBoxs.length-1].offsetTop+Math.floor(oBoxs[oBoxs.length-1].offsetHeight/2);
        var scrollTop=document.body.scrollTop||document.documentElement.scrollTop;/*标准模式和混杂模式下滚动条滚动的高度*/
        var height=document.body.clientHeight||document.documentElement.clientHeight;/*标准模式和混杂模式下浏览器可视区域的高度*/
        if(lastHeight<scrollTop+height)
        {
            var oBox=document.createElement("div");
            oBox.className="box";
            oParent.appendChild(oBox);
            var pic=document.createElement("div");
            pic.className="pic";
            oBox.appendChild(pic);
            var img=document.createElement('img');
            img.src='images/'+dataInt.data[i].src;//根据自己的图片的路径而定
            pic.appendChild(img);
        }
    }
}
}

function getByClass(parent,className) {
    var boxArr=parent.getElementsByTagName(className);
    return boxArr;
}

    3.JS文件：

    /**
 * Created by heshan on 2017/4/19.
 */
var n=0;/*用于标记已经加载的图片避免重加载*/
var hArr=[];/*全局变量实现懒加载*/
window.onload=function(){

    waterfall('main','box');
    var dataInt={"data":[{"src":"31.jpg"},{"src":"32.jpg"},{"src":"33.jpg"},{"src":"34.jpg"},{"src":"34.jpg"},{"src":"35.jpg"},{"src":"36.jpg"}]};
    window.onscroll=function () {
        var oParent=document.getElementById('main');
        var oBoxs=getByClass(oParent,"box");
        for(var i=0;i<dataInt.data.length;i++)
        {
            var lastHeight=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滚动条滚动的高度*/
            var height=document.body.clientHeight||document.documentElement.clientHeight;/*混杂模式和标准模式下浏览器可视区域的高度*/
            if(lastHeight<scrollTop+height)
            {
                var oBox=document.createElement("div");
                oBox.className="box";
                oParent.appendChild(oBox);
                var pic=document.createElement("div");
                pic.className="pic";
                oBox.appendChild(pic);
                var img=document.createElement('img');
                img.src='images/'+dataInt.data[i].src;
                pic.appendChild(img);
            }
        waterfall('main','box');
        }
    }
}
function waterfall(parent,box){
  //  console.log(hArr)
    var oParent=document.getElementById(parent);
    var oBoxs=getByClass(oParent,box);
    /*计算页面显示的列数*/
    var oBoxW=oBoxs[0].offsetWidth;
    var cols=Math.floor(document.documentElement.clientWidth/oBoxW);
    for(var i=n;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);
           console.log(minH,index);
            oBoxs[i].style.position="absolute";
            oBoxs[i].style.top=minH+"px";
            oBoxs[i].style.left=oBoxs[index].offsetLeft+'px';
            hArr[index]+=oBoxs[i].offsetHeight;
        }
        n++;
    }

}

function getByClass(parent,className) {
    var boxArr=parent.getElementsByClassName(className);
    return boxArr;
}
function  getMinHIndex(arr,val) {
    for(var i=0;i<arr.length;i++)
    {
        if(arr[i]==val)
        {
            return i;
        }
    }
}

    上诉的图片根据自己的图像的文件夹的位置而定：实现的效果如下所示：

    二、利用CSS样式实现瀑布流布局（不过懒加载部分需要结合JS，基本的瀑布流的布局可以直接利用CSS实现）

      利用css实现瀑布流的布局主要利用的是多栏式布局

    1、HTML文件

    <!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>纯CSS3实现的瀑布流</title>
    <link type="text/css" rel="stylesheet" href="css/waterfall.css" />
    <script src="index.js"></script>
</head>
<body>
    <div class="container" id="main">
        <div><img src="images/P_00.jpg" /></div>
        <div><img src="images/P_01.jpg" /></div>
        <div><img src="images/P_02.jpg" /></div>
        <div><img src="images/P_03.jpg" /></div>
        <div><img src="images/P_04.jpg" /></div>
        <div><img src="images/P_05.jpg" /></div>
        <div><img src="images/P_06.jpg" /></div>
        <div><img src="images/P_07.jpg" /></div>
        <div><img src="images/P_08.jpg" /></div>
        <div><img src="images/P_09.jpg" /></div>
        <div><img src="images/P_010.jpg" /></div>
        <div><img src="images/P_011.jpg" /></div>
        <div><img src="images/P_012.jpg" /></div>
        <div><img src="images/P_013.jpg" /></div>
        <div><img src="images/P_014.jpg" /></div>
        <div><img src="images/P_015.jpg" /></div>
        <div><img src="images/P_016.jpg" /></div>
        <div><img src="images/P_017.jpg" /></div>
        <div><img src="images/P_018.jpg" /></div>
        <div><img src="images/P_019.jpg" /></div>
        <div><img src="images/P_00.jpg" /></div>
        <div><img src="images/P_01.jpg" /></div>
        <div><img src="images/P_02.jpg" /></div>
        <div><img src="images/P_03.jpg" /></div>
        <div><img src="images/P_04.jpg" /></div>
        <div><img src="images/P_05.jpg" /></div>
        <div><img src="images/P_06.jpg" /></div>
        <div><img src="images/P_07.jpg" /></div>
        <div><img src="images/P_08.jpg" /></div>
        <div><img src="images/P_09.jpg" /></div>
        <div><img src="images/P_010.jpg" /></div>
        <div><img src="images/P_011.jpg" /></div>
        <div><img src="images/P_012.jpg" /></div>
        <div><img src="images/P_013.jpg" /></div>
        <div><img src="images/P_05.jpg" /></div>
        <div><img src="images/P_06.jpg" /></div>
        <div><img src="images/P_07.jpg" /></div>
        <div><img src="images/P_08.jpg" /></div>
        <div><img src="images/P_09.jpg" /></div>
        <div><img src="images/P_010.jpg" /></div>
        <div><img src="images/P_011.jpg" /></div>
        <div><img src="images/P_012.jpg" /></div>
        <div><img src="images/P_013.jpg" /></div>
        <div><img src="images/P_03.jpg" /></div>
        <div><img src="images/P_04.jpg" /></div>
        <div><img src="images/P_05.jpg" /></div>
        <div><img src="images/P_06.jpg" /></div>
        <div><img src="images/P_07.jpg" /></div>
        <div><img src="images/P_08.jpg" /></div>
        <div><img src="images/P_09.jpg" /></div>
    </div>
</body>
</html>

    2.css样式文件

    .container{
    -webkit-column-160px;
    -moz-column-160px; 
      -webkit-column-gap:5px;
      -moz-column-gap:5px;
}


/*数据块 砖块*/

.container div{160px;
               margin:4px 0;}

    实现的效果图如下：

     转载请注明出处：http://www.cnblogs.com/heshan1992/p/6735242.html
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  • 原文地址：https://www.cnblogs.com/heshan1992/p/6735242.html
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