JavaScript 滑移效果
这里说的滑移其实就是减速效果,能根据设定的坐标平面移动。
效果
自动滑移:
定点滑移:(鼠标点击)
定线滑移:(鼠标拖动轨迹)
代码:
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>滑移效果</title>

<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)
{
oEvent.pageX = oEvent.clientX + document.documentElement.scrollLeft;
oEvent.pageY = oEvent.clientY + document.documentElement.scrollTop;
}
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;
}
};


function removeEventHandler(oTarget, sEventType, fnHandler)
{

if (oTarget.removeEventListener)
{
oTarget.removeEventListener(sEventType, fnHandler, false);

} else if (oTarget.detachEvent)
{
oTarget.detachEvent("on" + sEventType, fnHandler);

} else
{
oTarget["on" + sEventType] = null;
}
};


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 Slippage = Class.create();

Slippage.prototype =
{

initialize: function(obj, options)
{

this.obj = $(obj);
this._timer =null;
this._xs = this._ys = [];
this.X = parseInt(this.obj.style.left) || 0;
this.Y = parseInt(this.obj.style.top) || 0;
this.SetOptions(options);
this.Step = Math.abs(this.options.Step);
this.Time = Math.abs(this.options.Time);
this.Loop = this.options.Loop;
this.Relative = this.options.Relative;
this.SetPosition(this.options.X || [], this.options.Y || []);
},
//设置默认属性

SetOptions: function(options)
{

this.options =
{//默认值
Step: 10,//滑动变化率
Time: 10,//滑动延时
X: [],//x坐标变化
Y: [],//y坐标变化
Loop: false,//是否循环
Relative: true//是否相对位置
};

Object.extend(this.options, options ||
{});
},
//

SetPosition: function(arrX, arrY)
{
if(arrX.length <= 0 && arrX.length <= 0) return false;
else if(arrX.length <= 0) arrX = [0];
else if(arrY.length <= 0) arrY = [0];
this._xs = arrX; this._ys = arrY;

if(this.Relative)
{

for(var i in this._xs)
{ if (i == 0)
{ this._xs[0] += this.X; } else
{ this._xs[i] += this._xs[i-1]; } }

for(var i in this._ys)
{ if (i == 0)
{ this._ys[0] += this.Y; } else
{ this._ys[i] += this._ys[i-1]; } }
}
this.Set();
},
//

Set: function()
{
//当全部坐标指向同一个位置时会进入死循环
if(this._xs.length <= 0 && this._ys.length <= 0) return;
if(this._xs.length > 0) this.X = this._xs.shift();
if(this._ys.length > 0) this.Y = this._ys.shift();

if(this.Loop && this._xs.length > 0 && this._ys.length > 0)
{ this._xs.push(this.X);this._ys.push(this.Y); }
//$("aa").innerHTML+=this._ys.length+"=";
this.Move(this.X, this.Y);
},
//

Move: function(iX, iY)
{
clearTimeout(this._timer);

var iLeft = parseInt(this.obj.style.left) || 0, iTop = parseInt(this.obj.style.top) || 0, iLeftStep = this.GetStep(iX, iLeft), iTopStep = this.GetStep(iY, iTop);

if (iLeftStep == 0 && iTopStep == 0)
{
this.Set();

} else
{
this.obj.style.left = (iLeft + iLeftStep) + "px"; this.obj.style.top = (iTop + iTopStep) + "px";

var oThis = this; this._timer = setTimeout(function()
{ oThis.Move(iX, iY); }, this.Time);
}
},
//

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;
}
};


window.onload = function()
{

new Slippage("idSlippage3",
{ X: [200,200,0,-200,-100,-100], Y: [0,0,100,-100,100,-100], Loop: true });
var oSlippage = new Slippage("idSlippage");

$("aa").onclick = function(e)
{ var oEvent = Event(e);oSlippage.Move(oEvent.pageX, oEvent.pageY);}

var oSlippage2 = new Slippage("idSlippage2",
{ Step: 1, Relative: false }),x=[],y=[];

$("bb").onmousedown = function(e)
{ addEventHandler(this, "mousemove", Set); }

$("bb").onmouseout = function(e)
{ removeEventHandler(this, "mousemove", Set); x=y=[];}

$("bb").onmouseup = function(e)
{ removeEventHandler(this, "mousemove", Set); oSlippage2.SetPosition(x, y);x=y=[];}

function Set(e)
{ var oEvent = Event(e); x.push(oEvent.pageX); y.push(oEvent.pageY); }
}

</script>
</head>
<body>
自动滑移:
<div id="cc" style="height:200px; width:500px; border:1px solid #000000; position:relative;overflow:hidden;">
<div id="idSlippage3" style="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:50px; left:50px;"> </div>
</div>
定点滑移:(鼠标点击)
<div id="aa" style="height:200px; width:500px; border:1px solid #000000; overflow:hidden;">
<div id="idSlippage" style="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:-50px; left:50px;"> </div>
</div>
定线滑移:(鼠标拖动轨迹)
<div id="bb" style="height:200px; width:500px; border:1px solid #000000; overflow:hidden;">
<div id="idSlippage2" style="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:-50px; left:50px;"> </div>
</div>
</body>
</html>
效果
自动滑移:
代码:




























































































































































































































































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程序中包含的js工具库CJL.0.1.min.js,原文在这里。
分类:
Javascript
标签:
JavaScript
, 滑移
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