JS仿新浪微博大厅首页滚动效果

作者：袖梨 2022-06-25

提示：您可以先修改部分代码再运行

<!DOCTYPE html ><html><head><meta charset="utf-8" /><title>JS仿新浪微博大厅首页滚动效果</title><style type="text/css"> 
*{ margin:0; padding:0;}
body { font:12px/1.8 Arial; color:#666;}
h1.tit-h1 { font-size:38px; text-align:center; margin:30px 0 15px; color:#f60;}
.go-back{ text-align:center; border-top:1px dashed #ccc; padding:10px; margin-top:20px; font-size:40px;}
li{ list-style:none;}
.wrapper {padding:50px;}

ul, li {margin:0;padding:0;list-style:none}
a{ color:#fff;}
body {margin:0;height:100%;background: #333;}
.wp {position: relative;overflow:hidden;margin:20px auto;border:4px solid #121212;background:#fff;}
.slider {position: absolute;padding:0 20px;left:0;top: 0;}
.fl {float:left}
.slider img {display:block; padding: 2px; border: 1px solid #ccc} 
.slider li {padding: 20px 0; border-bottom: 1px dashed #ccc;overflow:hidden;width:100%}
.slider p {font-size: 12px;margin:0;padding-left:68px;color:#333;line-}
<script type="text/javascript">
function H$(i) {return document.getElementById(i)}
function H$$(c, p) {return p.getElementsByTagName(c)}
var slider = function () {
	function inits (o) {
		this.id = o.id;
		this.at = o.auto ? o.auto : 3;
		this.o = 0;
		this.pos();
		alert(o);
	}
	inits.prototype = {
		pos : function () {
			clearInterval(this.__b);
			this.o = 0;
			var el = H$(this.id), li = H$$('li', el), l = li.length;
			var _t = li[l-1].offsetHeight;
			var cl = li[l-1].cloneNode(true);
			cl.style.opacity = 0; cl.style.filter = 'alpha(opacity=0)';
			el.insertBefore(cl, el.firstChild);
			el.style.top = -_t + 'px';
			this.anim();
		},
		anim : function () {
			var _this = this;
			this.__a = setInterval(function(){_this.animH()}, 20);
		},
		animH : function () {
			var _t = parseInt(H$(this.id).style.top), _this = this;
			if (_t >= -1) {
				clearInterval(this.__a);
				H$(this.id).style.top = 0;
				var list = H$$('li',H$(this.id));
				H$(this.id).removeChild(list[list.length-1]);
				this.__c = setInterval(function(){_this.animO()}, 20);
				//this.auto();
			}else {
			var __t = Math.abs(_t) - Math.ceil(Math.abs(_t)*.07);
			H$(this.id).style.top = -__t + 'px';
			}
		},
		animO : function () {
			this.o += 2;
			if (this.o == 100) {
				clearInterval(this.__c);
				H$$('li',H$(this.id))[0].style.opacity = 1;
				H$$('li',H$(this.id))[0].style.filter = 'alpha(opacity=100)';
				this.auto();
			}else {
				H$$('li',H$(this.id))[0].style.opacity = this.o/100;
				H$$('li',H$(this.id))[0].style.filter = 'alpha(opacity='+this.o+')';
			}
		},
		auto : function () {
			var _this = this;
			this.__b = setInterval(function(){_this.pos()}, this.at*1000);
		}
   }
	return inits;
}();
<body><div class="wrapper"><div class="wp"><ul id="slider" class="slider"><li><img  src="http://t1.qlogo.cn/mbloghead/b9127c4ca63961bace88/50" alt="" /><p>入山又恐别倾城  世间安得双全 不负如来不负卿</p></li><li><img  src="http://t1.qlogo.cn/mbloghead/b9127c4ca63961bace88/50" alt="" /><p>第一最好不相见，如此便可不相恋。</p></li><li><img  src="http://t1.qlogo.cn/mbloghead/b9127c4ca63961bace88/50" alt="" /><p>那一天 闭目在经殿香雾</p></li><li><img  src="http://t1.qlogo.cn/mbloghead/b9127c4ca63961bace88/50" alt="" /><p> 你见 或者不见我  我就在那里 </p></li></ul></div><script type="text/javascript">
new slider({id:'slider'})
</div></body></head></html>

提示：您可以先修改部分代码再运行

JS仿新浪微博大厅首页滚动效果

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