瀑布流以及回顶部的效果

*{
margin:0;
padding:0;
}
h1{
text-align:center;
height:100px;
}
body{
background-color:RGB(232,231,226);
}
.all{
margin:0 auto;
width:1000px;
}
.number{
float:left;
width:225px;
}
.content
{
margin:5px;
background-color:white;
}
img{
margin:5px;
}
.loading{
position: absolute;
width:100%;
height:40px;
display:none;
text-align:center;
background-color:RGB(189,203,207);
}
#toTop
{
position:fixed;
_position:fixed;
font-size:12px;
color:Blue;
width:15px;
text-align:center;
right:300px;
bottom:100px;
cursor:pointer;
background-color:RGB(243,247,251);
display:none;
}

window.onload = function () {
//初始参数
var reset = 0; //某些滚动条会触发三次scroll事件 用这个解决
var surplusHeight = 800; //差值
var imgWidth = "206px"; //img的宽度
var imgHeight = 0; //img的高度
var textHeight = 0; //文字高度
var showTopButtonHeight = 500;//回到顶部按钮的距离
var bigDivCount = 4;
var div1 = $("one");
var div2 = $("two");
var div3 = $("three");
var div4 = $("four");
var loading = $("loading");
var toTop = $("toTop");
//得到浏览器的名称
var browser = getBrowser();
//数据源
var imgArray = []; //img数组 也就是数据来源
var textArray = []; //img底下的文字和img对应
textArray[0] = "小花美女";
textArray[1] = "小花美女小花美女";
textArray[2] = "小花美女小花美女小花美女";
textArray[3] = "小花美女小花美女小花美女小花美女";
textArray[4] = "小花美女 小花美女";
textArray[5] = "小花美女小花小花美女";
textArray[6] = "小花美女";
textArray[7] = "小花美女小花美女";
textArray[8] = "小花美女小花美女小花美女";
textArray[9] = "小花美女小花美女小花美女小花美女小花美女";
textArray[10] = "小花美女小花美女小花美女小花美女小花美女";
textArray[11] = "小花美女小花美女小花美女小花美女小花美女小花美女";
textArray[12] = "小花美女小花美女小花美女小花美女小花美女小花美女小花美女";
textArray[13] = "小花美女小花美女小花美女小花美女小花美女小花美女小花美女小花美女";
textArray[14] = "小花美女小花美女小花美女小花美女小花美女小花美女小花美女小花美女";
textArray[15] = "小花美女小花美女小花美女小花美女小花美女小花美女小花美女小花美女";
imgArray[0] = "http://zsrimg.ikafan.com/file_images/article/201211/960bda11tw1dnw504ga3vj.jpg";
imgArray[1] = "http://zsrimg.ikafan.com/file_images/article/201211/771f735ctw1dnw5gv6dmcj.jpg";
imgArray[2] = "http://zsrimg.ikafan.com/file_images/article/201211/5d5e9605gw1dnw4o6uk3gj.jpg";
imgArray[3] = "http://zsrimg.ikafan.com/file_images/article/201211/6d9cb0b8jw1dnw5m0y5yrj.jpg";
imgArray[4] = "http://zsrimg.ikafan.com/file_images/article/201211/62dae985gw1dnzc4mwvm5j.jpg";
imgArray[5] = "http://zsrimg.ikafan.com/file_images/article/201211/8d95fb4cgw1dnzec2c6cdj.jpg";
imgArray[6] = "http://zsrimg.ikafan.com/file_images/article/201211/872bccc8jw1dnzch2aqtkj.jpg";
imgArray[7] = "http://zsrimg.ikafan.com/file_images/article/201211/5b104465tw1dnzdlozp6tj.jpg";
imgArray[8] = "http://zsrimg.ikafan.com/file_images/article/201211/6de170f6jw1dnzl7jbzidj.jpg";
imgArray[9] = "http://zsrimg.ikafan.com/file_images/article/201211/6a93dbfbgw1dnzeiu1draj.jpg";
imgArray[10] = "http://zsrimg.ikafan.com/file_images/article/201211/6ea59a74jw1dnzm0wbf7vj.jpg";
imgArray[11] = "http://zsrimg.ikafan.com/file_images/article/201211/48bf076ejw1dnzexjhl6dj.jpg";
imgArray[12] = "http://zsrimg.ikafan.com/file_images/article/201211/6da7993fjw1dnvsnesrutj.jpg";
imgArray[13] = "http://zsrimg.ikafan.com/file_images/article/201211/75914d3fgw1dnzlgn33njj.jpg";
imgArray[14] = "http://zsrimg.ikafan.com/file_images/article/201211/6a8dea72gw1dnzlwnfju0j.jpg";
imgArray[15] = "http://zsrimg.ikafan.com/file_images/article/201211/696387aagw1dnzqd829yyj.jpg";
//初始化
loadImg();
//主会场
window.onscroll = fun_scroll;
//滚动方法
function fun_scroll() {
//body的高度
var topAll = (browser == "Firefox") ? document.documentElement.scrollHeight : document.body.scrollHeight;
//卷上去的高度
var top_top = document.body.scrollTop || document.documentElement.scrollTop;
//回到顶部按钮操作
if (top_top > showTopButtonHeight)
toTop.style.display = "block";
else
toTop.style.display = "none";
//控制滚动条次数以及判断是否到达底部
if (reset == 0) {
var topAll = (browser == "Firefox") ? document.documentElement.scrollHeight : document.body.scrollHeight; //body的高度
var top_top = document.body.scrollTop || document.documentElement.scrollTop; //卷上去的高度
var result = topAll - top_top;
if (result 0) {
return "MSIE";
}
if (isFirefox = navigator.userAgent.indexOf("Firefox") > 0) {
return "Firefox";
}
if (isSafari = navigator.userAgent.indexOf("Safari") > 0) {
return "Safari";
}
if (isCamino = navigator.userAgent.indexOf("Camino") > 0) {
return "Camino";
}
if (isMozilla = navigator.userAgent.indexOf("Gecko/") > 0) {
return "Gecko";
}
}
//回到顶部
toTop.onclick = function () {
var count = 500; //每次的距离
var speed = 200; //速度
var timer = setInterval(function () {
var top_top = document.body.scrollTop || document.documentElement.scrollTop;
var tt = top_top - count;
tt = (tt 0)
window.scrollTo(tt, tt);
else
clearInterval(timer);
}, speed)
};
}

I like TRY

△回顶部

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]