通过js脚本来控制图层移动效果，能自定义移动速度和移动方向，在某些特定网页就用得到这个特效。
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<title>javascript控制图层移动特效_武鸣人</title>
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<style type="text/css">
*{margin : 0; padding : 0;}
body{font:12px "微软雅黑", Tahoma, "宋体" }
.inputcon{margin:50px 50px 50px; width:600px;}
.inputcon p{ padding-bottom : 10px;}
.inputcon .inp{ border : 1px solid #ccc; width : 100px; height: 18px; line-height : 18px;}
.container{ position:relative; overflow:hidden; border:1px solid #000; margin:50px 50px 50px;}
.container .sprite { overflow:hidden; background:#f00; color:#fff; line-height:40px; position:absolute; }
</style>
<script type="text/javascript">
/*
** 运动对象封装
*/
function Run(dir){this.dir = dir;};
Run.prototype = {};
/*
** 自动移动
** 返回值: undefined
** 参数:
w : 舞台宽度(Number)
h : 舞台高度(Number)
sw : 移动对象宽度(Number)
sh : 移动对象高度(Number)
gx : 单位时间沿x轴移动的长度(Number)
gy : 单位时间沿y轴移动的长度(Number)
sprite : 运动对象(dom Object)
t : 移动间隔（单位毫秒 Number）
*/
Run.prototype.play = function(w, h, sw, sh, gx, gy, sprite, t){
var _this = this;
(function(dir){
_this.dir = dir;
var _self = arguments.callee;
_this.__beginauto(t, function(){
var _left = parseInt(sprite.style.left);
var _top = parseInt(sprite.style.top);
sprite.innerHTML = "<p>"+ dir + "</p>" + "<p>" + _left + "," + _top + "</p>";
if(dir === "top"){//竖直向上运动
sprite.style.top = _top - gy + "px";
if(parseInt(sprite.style.top) <= 0){
sprite.style.top = 0 + "px";
_self("bottom");
};
}else if(dir === "bottom"){//竖直向下运动
sprite.style.top = _top + gy + "px";
if(parseInt(sprite.style.top) + sh >= h){
sprite.style.top = h - sh + "px";
_self("top");
};
}else if(dir === "right"){//水平向右运动
sprite.style.left = _left + gx + "px";
if(parseInt(sprite.style.left) + sw >= w){
sprite.style.left = w - sw;
_self("left");
};
}else if(dir === "left"){//水平相左运动
//_this.__stopauto();
//alert(_left - gy)
sprite.style.left = _left - gx + "px";
if(parseInt(sprite.style.left) <= 0){
sprite.style.left = 0;
_self("right");
};
}else if(dir === "leftTop"){//向左上角方向运动
sprite.style.left = _left - gx +"px";
sprite.style.top = _top - gy + "px";
if(parseInt(sprite.style.left) <= 0 || parseInt(sprite.style.top) <= 0){
if(parseInt(sprite.style.left) + sw <= 0){
sprite.style.left = 0;
};
if(parseInt(sprite.style.top) + sh <= 0){
sprite.style.top = 0;
};
_self("rightBottom");
};
}else if(dir === "rightTop"){//向右上角方向运动
sprite.style.left = _left + gx + "px";
sprite.style.top = _top - gy + "px";
if(parseInt(sprite.style.left) + sw >= w || parseInt(sprite.style.top) <= 0){
if(parseInt(sprite.style.left) + sw >= w){
sprite.style.left = w - sw;
};
if(parseInt(sprite.style.top) <= 0){
sprite.style.top = 0;
};
_self("leftBottom");
};
}else if(dir === "leftBottom"){//向左下角方向运动
sprite.style.left = _left - gx + "px";
sprite.style.top = _top + gy + "px";
//_this.__stopauto();
//alert(dir);
if(parseInt(sprite.style.left) <= 0 || parseInt(sprite.style.top) + sh >= h){
if(parseInt(sprite.style.left) <= 0){
sprite.style.left = 0;
};
if(parseInt(sprite.style.top) + sh >= h){
sprite.style.top = h - sh;
};
_self("rightTop");
};
}else if(dir === "rightBottom"){//向右下角方向运动
sprite.style.left = _left + gx +"px";
sprite.style.top = _top + gy + "px";
if(parseInt(sprite.style.left) + sw >= w || parseInt(sprite.style.top) + sh >= h){
_this.__stopauto();
if(parseInt(sprite.style.left) + sw >= w){
sprite.style.left = w - sw;
};
if(parseInt(sprite.style.top) + sh >= h){
sprite.style.top = h - sh;
};
_self("leftTop");
};
};
});
})(_this.dir);
};
//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)Run.prototype.dir = null;
Run.prototype.pause = function(){
this.__stopauto();
};
//开始自动移动
Run.prototype.__beginauto = function(t, togo){
togo = togo || function(){};
this.__stopauto();
this.__auto = setInterval(function(){
togo();
}, t);
};
//停止自动移动
Run.prototype.__stopauto = function(togo){
togo = togo || function(){};
if(this.__auto !== null){
clearInterval(this.__auto);
this.__auto = null;
togo();
};
};
//自动移动的定时器
Run.prototype.__auto = null;
</script>
</head>
<body>
<a href="https://www.wuming.ren">武鸣人</a>，各种信息资源免费发布，分享励志语录经典短句，减肥健身常识，各种js特效代码。网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)<hr>
<!--欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。-->
<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>
<div class="inputcon">
<p>
水平移动距离: <input type="text" value="10" class="inp" id="inp_gx">
竖直移动距离: <input type="text" value="10" class="inp" id="inp_gy">
运动间隔t: <input type="text" value="20" class="inp" id="inp_t">
</p>
<p>
运动方向:
<select style="width:120px;" id="sel_dir">
<option value="left">left</option>
<option value="right">right</option>
<option value="top">top</option>
<option value="bottom">bottom</option>
<option value="leftBottom">lefBottom</option>
<option value="rightBottom">rightBottom</option>
<option value="leftTop">leftTop</option>
<option value="rightTop">rightTop</option>
</select>
<input type="button" id="btn" value="Play" />
</p>
</div>
<div class="container" id="container" style="width:600px;height:400px;">
<div class="sprite" style="width:80px;height:80px; left:200px;top:200px;" id="sprite"> </div>
</div>
<script type="text/javascript">
/*
** 实例化调用
*/
var demo;
window.onload = function(){
var btn = document.getElementById("btn"),
sprite = document.getElementById("sprite"),
inp_gx = document.getElementById("inp_gx"),
inp_gy = document.getElementById("inp_gy"),
inp_t = document.getElementById("inp_t"),
sel_dir = document.getElementById("sel_dir"),
con = document.getElementById("container"),
w = parseInt(con.style.width), h = parseInt(con.style.height),
sw = parseInt(sprite.style.width), sh = parseInt(sprite.style.height);
sel_dir.onchange = function(){
demo.pause();
demo.dir = this.value;
var gx = parseInt(inp_gx.value), gy = parseInt(inp_gy.value), t = parseInt(inp_t.value);
//demo.play(w, h, sw, sh, gx, gy, sprite, t);
btn.value = "Play"
};
demo = new Run(sel_dir.value);
btn.onclick = function(){
var val = this.value.toLowerCase();
if(val === "play"){
this.value = "Pause";
var gx = parseInt(inp_gx.value), gy = parseInt(inp_gy.value), t = parseInt(inp_t.value);
if(isNaN(gx) || isNaN(gy) || isNaN(t)){
alert("请填写数字");
}else{
demo.play(w, h, sw, sh, gx, gy, sprite, t);
};
//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)}else if(val === "pause"){
this.value = "Play";
demo.pause();
};
};
};
</script>
</body>
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