原生js页面滚动延迟加载图片
(编辑：jimmy 日期: 2025/12/9 浏览：3 次 )
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。
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