Home > Article > Web Front-end > JS implements screen-based scrolling effect with good compatibility_javascript skills

JS implements screen-based scrolling effect with good compatibility_javascript skills

WBOYOriginal: 2016-05-16 15:33:25972browse

The example in this article describes the JS implementation of a screen-based scrolling effect with good compatibility. Share it with everyone for your reference, the details are as follows:

The parameters in the code are explained as follows:

id The id of the content you want to scroll
l The position of the abscissa is not written as close to the right
t The position you want to place on the page defaults to the bottom edge. 0 means to the top edge
f 1 means fixed, not written or 0 means rolling.

This code will not jitter when scrolling and changes with the screen size

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-scroll-follow-src-style-codes/

The specific code is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>随屏滚动</title>
<style>
 html,body{
  padding:0;
  margin:0;
 }
</style>
</head>
<body>
 <div id="aa" style="width:200px;height:200px;background:#c0c0c0;" >我在随屏滚</div>
 <div id="bb" style="width:200px;height:200px;background:#c0c0c0;" >我静止不动</div>
 <div style="width:100%;height:500px;background:#000"></div>
 <div style="width:100%;height:500px;background:green"></div>
 <div style="width:100%;height:500px;background:red"></div>
</body>
</html>
<script>
function scroll(p){
 var d = document,dd = d.documentElement,db = d.body,w = window,o = d.getElementById(p.id),ie = /msie/i.test(navigator.userAgent),style;
  if(o){
  o.style.cssText +=";position:"+(p.f&&!ie&#63;'fixed':'absolute')+";"+(p.l==undefined&#63;'right:0;':'left:'+p.l+'px;')+(p.t!=undefined&#63;'top:'+p.t+'px':'bottom:0');
   if(p.f&&ie){
   o.style.cssText +=';left:expression(body.scrollLeft + '+(p.l==undefined&#63;db.clientWidth-o.offsetWidth:p.l)+' + "px");top:expression(body.scrollTop +'+(p.t==undefined&#63;db.clientHeight-o.offsetHeight:p.t)+'+ "px" );'
    db.style.cssText +=";background-image:url(about:blank);background-attachment:fixed;"
   }else{
    if(!p.f){
     w.onresize = w.onscroll = function(){
      var timer,timer1;
      return function(){
       if(timer)
        clearTimeout(timer);
       timer = setTimeout(function(){
        timer1 = setInterval(function(){
         var st = db.scrollTop,c;
         c = st - o.offsetTop + (p.t!=undefined&#63;p.t:(w.innerHeight||db.clientHeight)-o.offsetHeight);
         if(c!=0){
          o.style.top = o.offsetTop + Math.ceil(Math.abs(c)/10)*(c<0&#63;-1:1) + 'px';
         }else{
          clearInterval(timer1);  
         }
        },10)
       },100)//控制滚动的频率越大频率越慢
      }
     }()
    }
   }
  } 
 }
 scroll({
  id:'aa'
 })
  scroll({
  id:'bb',
  l:0,
  t:200,
  f:1
  })
</script>

I hope this article will be helpful to everyone in JavaScript programming.

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：Detailed explanation of event handling in javascript_javascript skillsNext article：Detailed explanation of event handling in javascript_javascript skills

See more

JS implements screen-based scrolling effect with good compatibility_javascript skills

Related articles