通过js脚本实现鼠标感应图层自动滑动伸缩展示功能，还带几个功能按钮，不错的网页特效，根据自身需求来自己修改。
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<title>js实现图层鼠标感应自动滑动展示效果_武鸣人</title>
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<script type="text/javascript">
var $$ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};
function Event(e){
var oEvent = document.all ? window.event : e;
if (document.all) {
if(oEvent.type == "mouseout") {
oEvent.relatedTarget = oEvent.toElement;
}else if(oEvent.type == "mouseover") {
oEvent.relatedTarget = oEvent.fromElement;
}
}
return oEvent;
}
function addEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};
var Class = {
create: function() {
return function() {
this.initialize.apply(this, arguments);
}
}
}
Object.extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}
var GlideView = Class.create();
GlideView.prototype = {
//容器对象 容器宽度 展示标签 展示宽度
initialize: function(obj, iWidth, sTag, iMaxWidth, options) {
var oContainer = $$(obj), oThis=this, len = 0;
this.SetOptions(options);
this.Step = Math.abs(this.options.Step);
this.Time = Math.abs(this.options.Time);
this.Showtext = false;//是否显示说明文本
this._list = oContainer.getElementsByTagName(sTag);
len = this._list.length;
this._count = len;
this._width = parseInt(iWidth / len);
this._width_max = parseInt(iMaxWidth);
this._width_min = parseInt((iWidth - this._width_max) / (len - 1));
this._timer = null;
//有说明文本
if(this.options.TextTag && this.options.TextHeight > 0){
this.Showtext = true;
this._text = oContainer.getElementsByTagName(this.options.TextTag);
this._height_text = -parseInt(this.options.TextHeight);
}
this.Each(function(oList, oText, i){
oList._target = this._width * i;//自定义一个属性放目标left
oList.style.left = oList._target + "px";
oList.style.position = "absolute";
addEventHandler(oList, "mouseover", function(){ oThis.Set.call(oThis, i); });
//有说明文本
if(oText){
oText._target = this._height_text;//自定义一个属性放目标bottom
oText.style.bottom = oText._target + "px";
oText.style.position = "absolute";
}
})
//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
//容器样式设置
oContainer.style.width = iWidth + "px";
oContainer.style.overflow = "hidden";
oContainer.style.position = "relative";
//移出容器时返回默认状态
addEventHandler(oContainer, "mouseout", function(e){
//变通防止执行oList的mouseout
var o = Event(e).relatedTarget;
if (oContainer.contains ? !oContainer.contains(o) : oContainer != o && !(oContainer.compareDocumentPosition(o) & 16)) oThis.Set.call(oThis, -1);
})
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Step: 20,//滑动变化率
Time: 20,//滑动延时
TextTag: "",//说明容器tag
TextHeight: 0//说明容器高度
};
Object.extend(this.options, options || {});
},
//相关设置
Set: function(index) {
if (index < 0) {
//鼠标移出容器返回默认状态
this.Each(function(oList, oText, i){ oList._target = this._width * i; if(oText){ oText._target = this._height_text; } })
} else {
//鼠标移到某个滑动对象上
this.Each(function(oList, oText, i){
oList._target = (i <= index) ? this._width_min * i : this._width_min * (i - 1) + this._width_max;
if(oText){ oText._target = (i == index) ? 0 : this._height_text; }
})
}
this.Move();
},
//移动
Move: function() {
clearTimeout(this._timer);
var bFinish = true;//是否全部到达目标地址
this.Each(function(oList, oText, i){
var iNow = parseInt(oList.style.left), iStep = this.GetStep(oList._target, iNow);
if (iStep != 0) { bFinish = false; oList.style.left = (iNow + iStep) + "px"; }
//有说明文本
if (oText) {
iNow = parseInt(oText.style.bottom), iStep = this.GetStep(oText._target, iNow);
if (iStep != 0) { bFinish = false; oText.style.bottom = (iNow + iStep) + "px"; }
}
})
//未到达目标继续移动
if (!bFinish) { var oThis = this; this._timer = setTimeout(function(){ oThis.Move(); }, this.Time); }
},
//获取步长
GetStep: function(iTarget, iNow) {
var iStep = (iTarget - iNow) / this.Step;
if (iStep == 0) return 0;
if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1);
return iStep;
},
Each:function(fun) {
for (var i = 0; i < this._count; i++)
fun.call(this, this._list[i], (this.Showtext ? this._text[i] : null), i);
}
};//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
</script>
<style type="text/css">
#www_wuming_ren {
height:100px;
margin:100px auto;
}
#www_wuming_ren div {
width:500px;
height:100px;
}
#www_wuming_ren div a {
width:500px;
height:50px;
filter: alpha(opacity=50);
opacity: 0.5;
background:#000;
color:#fff;
text-decoration:none;
}
</style>
</head>
<body>
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<script type="text/javascript" src="https://www.wuming.ren/ad/tc.js"></script>
<script type="text/javascript" src="https://www.wuming.ren/ad/a.js"></script>
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</div>
<SELECT id=sel>
<OPTION value=-1 selected>不展开</OPTION>
</SELECT>
<BR>
<BR>
<INPUT id=up type=button value=" + 加 速 ">
<INPUT id=down type=button value=" - 减 速 ">
<BR>
<BR>
<INPUT id=stop type=button value=" 停 止 ">
<INPUT id=start type=button value=" 开 始 ">
<BR>
<BR>
<INPUT id=close type=button value=" 关闭滚动 ">
<INPUT id=open type=button value=" 恢复滚动 ">
<BR>
<BR>
<INPUT id=auto type=button value=" 自动滑动 ">
<INPUT id=cancel type=button value=" 取消自动 ">
<BR>
<BR>
<INPUT id=hide type=button value=" 隐藏说明 ">
<INPUT id=show type=button value=" 显示说明 ">
<BR>
<BR>
<SCRIPT>
var gv = new GlideView("www_wuming_ren", 1000, "div", 500, { TextTag: "a", TextHeight: 50 });
var oSel = $$("sel");
for (var i = 0; i <= gv._count; i++) {
var op = document.createElement("OPTION");
op.value = i; op.innerHTML = "展开第" + (i + 1) + "个";
oSel.appendChild(op);
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
oSel.onchange = function(){ gv.Set(oSel.value); }
$$("up").onclick = function(){ gv.Step -= 5; if(gv.Step <= 0) gv.Step = 1; };
$$("down").onclick = function(){ gv.Step += 5; if(gv.Step >= 500) gv.Step = 50; };
$$("stop").onclick = function(){ clearTimeout(gv._timer); };
$$("start").onclick = function(){ gv.Move(); };
$$("close").onclick = function(){ gv.Step = 1; };
$$("open").onclick = function(){ gv.Step = gv.options.Step; };
$$("hide").onclick = function(){ gv.Showtext = false; };
$$("show").onclick = function(){ gv.Showtext = true; };
var t = null, i = -1;
$$("auto").onclick = function(){ clearInterval(t);t=setInterval(function(){ if(++i>gv._count) i=0; gv.Set(i); }, 1000); };
$$("cancel").onclick = function(){ clearInterval(t);gv.Set(-1); };
</SCRIPT>
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