兼容多种浏览器的返回顶部特效

稿源：互联网 2022-04-02 21:43:02 点击： 3377 撤稿纠错

仿淘宝网返回顶部效果，用户体验良好，兼容当前主流浏览器。

以下讨论的是和返回顶部相关的兼容多种浏览器的返回顶部特效教程文章，内容是本站精心挑选整理的教程，希望对广大的网友给到帮助,下面是详细内容：

脚本代码(For Alixixi.com)如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<meta name="keywords" content="站长,网页特效,网页特效代码,js特效,js脚本,脚本,广告代码,zzjs,zzjs.net,www.zzjs.net,站长特效 网" />
<meta name="description" content="www.zzjs.net,站长特效网，站长必备js特效及广告代码。大量高质量js特效，提供高质量广告代码下载,尽在站长特效网" />
<title>网页特效 仿淘宝网回顶部效果 站长特效网欢迎您.</title>
<script type="text/javascript" src="/img/jquery_zzjs.js"></script>
<script type="text/javascript">
var scrolltotop={
 //startline: Integer. Number of pixels from top of doc scrollbar is scrolled before showing control
 //scrollto: Keyword (Integer, or "Scroll_to_Element_ID"). How far to scroll document up when control is clicked on (0=top).
 setting: {startline:1, scrollto: 0, scrollduration:1000, fadeduration:[500, 100]},
 controlHTML: '<img src="/img/up_20100814.png" style="width:24px; height:24px" />', //HTML for control, which is auto wrapped in DIV w/ ID="topcontrol"
 controlattrs: {offsetx:5, offsety:5}, //offset of control relative to right/ bottom of window corner
 anchorkeyword: '#top', //Enter href value of HTML anchors on the page that should also act as "Scroll Up" links
 state: {isvisible:false, shouldvisible:false},
 scrollup:function(){
  if (!this.cssfixedsupport) //if control is positioned using JavaScript
   this.$control.css({opacity:0}) //hide control immediately after clicking it
  var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto)
  if (typeof dest=="string" && jQuery('#'+dest).length==1) //check element set by string exists
   dest=jQuery('#'+dest).offset().top
  else
   dest=0
  this.$body.animate({scrollTop: dest}, this.setting.scrollduration);
 },
 keepfixed:function(){
  var $window=jQuery(window)
  var controlx=$window.scrollLeft() + $window.width() - this.$control.width() - this.controlattrs.offsetx
  var controly=$window.scrollTop() + $window.height() - this.$control.height() - this.controlattrs.offsety
  this.$control.css({left:controlx+'px', top:controly+'px'})
 },
 togglecontrol:function(){
  var scrolltop=jQuery(window).scrollTop()
  if (!this.cssfixedsupport)
   this.keepfixed()
  this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false
  if (this.state.shouldvisible && !this.state.isvisible){
   this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0])
   this.state.isvisible=true
  }
  else if (this.state.shouldvisible==false && this.state.isvisible){
   this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1])
   this.state.isvisible=false
  }
 },
 init:function(){
  jQuery(document).ready(function($){
   var mainobj=scrolltotop
   var iebrws=document.all
   mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest //not IE or IE7+ browsers in standards mode
   mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body')
   mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
    .css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
    .attr({title:'Scroll Back to Top'})
    .click(function(){mainobj.scrollup(); return false})
    .appendTo('body')
   if (document.all && !window.XMLHttpRequest && mainobj.$control.text()!='') //loose check for IE6 and below, plus whether control contains any text
    mainobj.$control.css({width:mainobj.$control.width()}) //IE6- seems to require an explicit width on a DIV containing text
   mainobj.togglecontrol()
   $('a[href="' + mainobj.anchorkeyword +'"]').click(function(){
    mainobj.scrollup()
    return false
   })
   $(window).bind('scroll resize', function(e){
    mainobj.togglecontrol()
   })
  })
 }
}//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
scrolltotop.init()
</script>
</head>
<body>
<a href="http://www.zzjs.net/">站长特效网</a>,站长必备的高质量网页特效和广告代码。zzjs.net，站长js特效。<hr>

需要加载js文件,请刷新后看效果.
<p style="height:5000px;"></p>
</body>
</html>

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