基于JavaScript与Django实现瀑布流布局

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Title</title>
 <style>
  .container {
   width: 1000px;
   margin: 0 auto;
   background-color: lightgray;
  }
 
  .item {
   width: 24%;
   margin-right: 10px;
   float: left;
  }
  .item img{
   width: 100%;
  }
 
 </style>
</head>
<body>
{#将内容放在container中#}
<div class="container">
{# 将图片内容放入四个item中，形成四个item#}
 <div class="item"></div>
 <div class="item"></div>
 <div class="item"></div>
 <div class="item"></div>
 
</div>
<script src="/static/js/jquery-2.1.4.min.js"></script>
<script>
 $(function () {
{#  网页加载时自动执行#}
  var obj = new ScrollImg();
  obj.fetchImg();
  obj.scrollEvent();
 })
 
{# 定义对象#}
 function ScrollImg() {
  this.nid = 0;
{#  取照片方法#}
  this.fetchImg = function () {
   var that = this
   $.ajax({
    url: '/get_imgs.html',
    type: 'GET',
{#  传输数据，已经取了多少照片，后台可以依据，继续取照片#}
    data: {'nid': that.nid},
    dataType: 'JSON',
    success: function (args) {
     if (args.status) {
      var img_list = args.data;
      $.each(img_list, function (index, obj) {
       var eqv = that.nid % 4;
       var tag = document.createElement('img')
       tag.src = '/' + obj.img_dir;
       console.log(eqv)
       $('.container').children().eq(eqv).append(tag)
       that.nid += 1;
      })
     }
    }
   })
  }
{#  监听滚动条，当滚到底部时，自动加载数据#}
  this.scrollEvent = function () {
   var that = this;
   $(window).scroll(function () {
    var srollTop = $(window).scrollTop();
    var winHeight = $(window).height();
    var docHeight = $(document).height();
    if (srollTop + winHeight >= docHeight - 2) {
     that.fetchImg();
    }
   })
  }
 }
</script>
</body>
</html>

def get_imgs(request):
 # 获取已经取得的照片数目
 index = request.GET.get('nid')
 #获取QuerySet集合对象，取从index后的10调数据
 imgs_list = models.Student.objects.values('id','img_dir','name')[index:index+10]
 imgs_list = list(imgs_list)
 # 传送状态和数据内容
 ret = {
  'status':True,
  'data':imgs_list
 }
 return JsonResponse(ret)