Home > Article > Web Front-end > Implementing waterfall flow layout based on JavaScript_javascript skills

Implementing waterfall flow layout based on JavaScript_javascript skills

WBOYOriginal: 2016-05-16 15:20:121007browse

The example in this article explains the detailed code for implementing waterfall flow layout in native JavaScript and shares it with you for your reference. The specific content is as follows

Rendering:

Specific code:

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 code:

*{
   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 code:

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;
      }
   }
}

I hope this article will be helpful to everyone learning JavaScript programming.

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：Simple JS clock example explanation_javascript skillsNext article：Simple JS clock example explanation_javascript skills

See more

Implementing waterfall flow layout based on JavaScript_javascript skills

Related articles