兼容性好的隨屏滾動

2024-09-05 12:17:55

字體：大中小

來源：轉載

供稿：網友

id 你要滾動的內容的id，l 橫坐標的位置不寫為緊貼右邊，t 你要放在頁面的那個位置默認是貼著底邊 0是貼著頂邊，f 1表示固定不寫或者0表示滾動。
　　本代碼滾動時不會出現抖動，隨著屏幕大小而變動

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=gbk" /><title>隨屏滾動</title><style>	html,body{		padding:0;		margin:0;	}</style></head><body>	<div   class="iwvjtn8m0"   id="aa" style="width:200px;height:200px;background:#c0c0c0;" >我在隨屏滾</div>	<div   class="iwvjtn8m0"   id="bb" style="width:200px;height:200px;background:#c0c0c0;" >我靜止不動</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?'fixed':'absolute')+";"+(p.l==undefined?'right:0;':'left:'+p.l+'px;')+(p.t!=undefined?'top:'+p.t+'px':'bottom:0');    		if(p.f&&ie){			o.style.cssText +=';left:expression(body.scrollLeft + '+(p.l==undefined?db.clientWidth-o.offsetWidth:p.l)+' + "px");top:expression(body.scrollTop +'+(p.t==undefined?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?p.t:(w.innerHeight||db.clientHeight)-o.offsetHeight);									if(c!=0){										o.style.top = o.offsetTop + Math.ceil(Math.abs(c)/10)*(c<0?-1:1) + 'px';									}else{										clearInterval(timer1);											}								},10)							},100)//控制滾動的頻率越大頻率越慢						}					}()				}			}    	}      }    scroll({    	id:'aa'	    })	 scroll({		id:'bb',		l:0,		t:200,		f:1	 })</script>

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