网站顶部带缓冲打开和关闭功能的横栏提示层js代码

作者：袖梨 2022-06-25

提示：您可以先修改部分代码再运行

<!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>
<title>网站顶部带缓冲打开和关闭功能的横栏提示层js代码</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">

<style type="text/<a href="http://www.111com.net/cssdiv/css.html" target="_blank">css</a>">
body{font:12px/16px arial;margin:0}
#TopTipHolder{height:0;overflow:hidden;position:relative}
#TopTip{line-text-align:center;background:#FC0}
#TopTipClose{cursor:hand;background:url(http://www.zzsky.cn/effect/images/20128/close.gif) no-repeat;position:absolute;right:10px;top:10px}
</style>
</head>
<body>

<div id="TopTipHolder">
	<div id="TopTip">网站顶部带缓冲效果和关闭功能的横栏提示效果</div>
	<div id="TopTipClose" title="关闭"></div>
</div>
<script type="text/javascript">
/* 
 * 页面顶部提示栏效果(TopTipEffect)
 *

* version: 1.0.0
 * @param {string}    id           tip提示标签id
 * @param {string}    holderId     父标签
 * @param {bool}      expand       展开/收起
 * @param {string}    step         每次移动步长
 * @param {object}    speed        移动速度
 */
var TopTipEffect = function(id, holderId, expand, step, speed){
    this.obj = document.getElementById(id);
    this.holder = document.getElementById(holderId);
    this.step = step;
    this.speed = speed;
    this.expand = expand;
    this.maxH = this.obj.offsetHeight;
    this.moveT = null;
    this.moving = false;
    this.tempH = expand ? 0 : this.maxH;
}
TopTipEffect.prototype = {
    play : function(){
        if(this.moving) return;
        if(this.holder.offsetHeight > this.maxH) return;
        var _this = this;
        this.moveT = setInterval(function(){_this.move()}, _this.speed);
    },
    move : function(){
        this.moving = true;
        if(this.expand){
            this.tempH += this.step;
            if(this.tempH > this.maxH){
                if((this.tempH - this.maxH) >= this.step){
                    this.expand = false;
                    this.moving = false;
                    clearInterval(this.moveT);
                    return;
                }else{
                    this.tempH = this.maxH;
                }
            }
        }else{
            this.tempH -= this.step;
            if(this.tempH < 0){
                if(-this.tempH >= this.step){
                    this.expand = true;
                    this.moving = false;
                    clearInterval(this.moveT);
                    return;
                }else{
                    this.tempH = 0;
                }
            }
        }
        this.holder.style.px";
        this.holder.scrollTop = this.maxH - this.tempH;
    }
}
var mytip = new TopTipEffect("TopTip", "TopTipHolder", true, 1, 10);
mytip.play();
//右上角关闭按钮点击
document.getElementById("TopTipClose").onclick = function(){
    mytip.play();
}
</script>
</body>
</html>

</td>
	  </tr>
	</table>

提示：您可以先修改部分代码再运行

网站顶部带缓冲打开和关闭功能的横栏提示层js代码

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