本文实例为大家讲解了javascript瀑布流代码,即js页面滚动延迟加载图片,分享给大家供大家参考,具体代码如下

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>原生Js页面滚动延迟加载图片</title>
<style type="text/css">
* 
{
 margin:0;
 padding:0
}
img.scrollLoading 
{
 border:1px solid #ccc;
 display:block;
 margin-top:10px;
}
</style>
</head>
<body>
<div id="content"></div>
</body>
</html>
<script type="text/javascript"> 
var _CalF = { 
 $:function(object){//选择器 
 if(object === undefined ) return; 
 var getArr = function(name,tagName,attr){ 
 var tagName = tagName || '*', 
 eles = document.getElementsByTagName(tagName), 
 clas = (typeof document.body.style.maxHeight === "undefined") "className" : "class";//ie6 
 attr = attr || clas, 
 Arr = []; 
 for(var i=0;i<eles.length;i++){ 
 if(eles[i].getAttribute(attr)==name){ 
 Arr.push(eles[i]); 
 } 
 } 
 return Arr; 
 }; 
 if(object.indexOf('#') === 0){ //#id 
 return document.getElementById(object.substring(1)); 
 }
 else if(object.indexOf('.') === 0){ //.class 
 return getArr(object.substring(1)); 
 }
 else if(object.match(/=/g)){ //attr=name
 return getArr(object.substring(object.search(/=/g)+1),null,object.substring(0,object.search(/=/g))); 
 }
 else if(object.match(/./g)){ //tagName.className 
 return getArr(object.split('.')[1],object.split('.')[0]); 
 } 
 }, 
 getPosition : function(obj) { //获取元素在页面里的位置和宽高 
 var top = 0, 
 left = 0, 
 width = obj.offsetWidth, 
 height = obj.offsetHeight; 
 while(obj.offsetParent){ 
 top += obj.offsetTop; 
 left += obj.offsetLeft; 
 obj = obj.offsetParent; 
 } 
 return {"top":top,"left":left,"width":width,"height":height}; 
 } 
}; 
 
//添加图片list 
var _temp = []; 
for (var i = 1; i < 21; i ++) { 
 _temp.push('<img class="scrollLoading" data-src="/UploadFiles/2021-04-02/o_' + i + '.jpg">

希望本文所述对大家学习javascript程序设计有所帮助。

标签:
js,加载图片

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