js method to imitate Baidu waterfall flow_javascript skills-JS Tutorial-php.cn

js method to imitate Baidu waterfall flow_javascript skills

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Release： 2016-05-16 16:15:41

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The example in this article describes the method of using js to imitate Baidu waterfall flow. Share it with everyone for your reference. The specific implementation method is as follows:

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>仿百度图片瀑布流</title>
<link rel="stylesheet" type="text/css" href="style.css">
<script src="js/jquery.min.js"></script>
<style>
*{margin:0; padding:0;}
#container{
width: 1000px;
border:1px solid #f00;
margin: 50px auto;
position: relative;
}
#container img{
position: absolute;
}
#loader{
width: 100%;
height: 60px;
background: url(loader.gif) no-repeat center;
position: fixed;
bottom: 0;
left: 0;
}
</style>
</head>
<script type="text/javascript">
$(function(){
 var oContainer=$('#container');
 var oLoader=$('#loader');
 var iWidth=200;//列宽
 var iSpace=10;//列数
 var iOuterWidth=iWidth+iSpace;
 var sUrl = 'localhost/api/json/popular&#63;callback=&#63;';
 var iCell=0;
 var iPage=0;
 var arrL=[];
 var arrT=[];
 var iBtn=true;

 function setCells(){
  iCell= Math.floor($(window).innerWidth()/iOuterWidth);
  if(iCell < 3){
   iCell =3;
  }
  if(iCell >6){
   iCell =6;
  }
  oContainer.css('width',iOuterWidth*iCell-iSpace);
 }
 setCells();
 for(var i=0;i < iCell; i++){
  arrL.push(i*iOuterWidth);
  arrT.push(0);
 }
 //console.log(arrL)
 getData()
 function getData(){
  if(iBtn){
   iBtn =false
   oLoader.show();
   $.getJSON(sUrl,'page='+iPage,function(data){
    $.each(data,function(i,obj){
     var $img =$('<img>');
     $img.attr('src',obj.preview);
     var iHeight= iWidth /obj.width * obj.height;
     var index=getMin();
     $img.appendTo(oContainer);
     $img.css({width:iWidth,height: iHeight});
     $img.css({top:arrT[index],left: arrL[index]})
     arrT[index]+=iHeight +10;
     oLoader.hide();
    })
    iPage++;
    iBtn=true;
   })
  }
 }
 $(window).on('resize',function(){
  var iOldCell= iCell;
  setCells();
  var iH = $(window).scrollTop()+$(window).innerHeight();
  var iMinIndex= getMin();
  if(arrT[iMinIndex]+oContainer.offset().top < iH){
   getData();
  }
  if(iOldCell == iCell) return ;
  arrT=[];
  arrL=[];
  for(var i=0;i < iCell; i++){
   arrL.push(i*iOuterWidth);
   arrT.push(0);
  }
  var $img = oContainer.find('img');
  $img.each(function(index,obj){
   var index=getMin();
   $(this).animate({top:arrT[index],left: arrL[index]})
   arrT[index]+=$(this).height() +10;
  })
 })
 $(window).on('scroll',function(){
  var iH = $(window).scrollTop()+$(window).innerHeight();
  var iMinIndex= getMin();
  if(arrT[iMinIndex]+oContainer.offset().top < iH){
   getData();
  }
 })
 function getMin(){
  var iv= arrT[0];
  var _index=0;
  for(var i=0; i<arrT.length; i++){
   if(arrT[i] < iv){
    iv= arrT[i];
    _index=i;
   }
  }
  return _index ;
 }
})
</script>
<body>
 <div id="top">仿百度图片瀑布流</div> 
 <!--标题 e -->
 <div id="container"></div>
 <div id="loader"></div>
 <!--效果块 e -->
</body>
</html>

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I hope this article will be helpful to everyone’s JavaScript programming design.