JS 简单的拖拽移动效果

JS部分：

//html 元素 拖拽效果js类 --start--

function Drag()

{

//初始化

this.initialize.apply(this, arguments)

}

Drag.prototype = {

//初始化

initialize : function (drag, options)

{

this.drag = this.$(drag);

this._x = this._y = 0;

this._moveDrag = this.bind(this, this.moveDrag);

this._stopDrag = this.bind(this, this.stopDrag);

this.setOptions(options);

this.handle = this.$(this.options.handle);

this.maxContainer = this.$(this.options.maxContainer);

this.maxTop = Math.max(this.maxContainer.clientHeight, this.maxContainer.scrollHeight) - this.drag.offsetHeight;

this.maxLeft = Math.max(this.maxContainer.clientWidth, this.maxContainer.scrollWidth) - this.drag.offsetWidth;

this.limit = this.options.limit;

this.lockX = this.options.lockX;

this.lockY = this.options.lockY;

this.lock = this.options.lock;

this.onStart = this.options.onStart;

this.onMove = this.options.onMove;

this.onStop = this.options.onStop;

//this.handle.style.cursor = "move";

this.changeLayout();

this.addHandler(this.handle, "mousedown", this.bind(this, this.startDrag))

},

changeLayout : function ()

{

this.drag.style.top = this.drag.offsetTop + "px";

this.drag.style.left = this.drag.offsetLeft + "px";

this.drag.style.position = "absolute";

this.drag.style.margin = "0"

},

startDrag : function (event)

{

var event = event || window.event;

this._x = event.clientX - this.drag.offsetLeft;

this._y = event.clientY - this.drag.offsetTop;

this.addHandler(document, "mousemove", this._moveDrag);

this.addHandler(document, "mouseup", this._stopDrag);

event.preventDefault && event.preventDefault();

this.handle.setCapture && this.handle.setCapture();

this.onStart()

},

moveDrag : function (event)

{

var event = event || window.event;

var iTop = event.clientY - this._y;

var iLeft = event.clientX - this._x;

if (this.lock) return;

this.limit && (iTop < 0 && (iTop = 0), iLeft < 0 && (iLeft = 0), iTop > this.maxTop && (iTop = this.maxTop), iLeft > this.maxLeft && (iLeft = this.maxLeft));

this.lockY || (this.drag.style.top = iTop + "px");

this.lockX || (this.drag.style.left = iLeft + "px");

event.preventDefault && event.preventDefault();

this.onMove()

},

stopDrag : function ()

{

this.removeHandler(document, "mousemove", this._moveDrag);

this.removeHandler(document, "mouseup", this._stopDrag);

this.handle.releaseCapture && this.handle.releaseCapture();

this.onStop()

},

//参数设置

setOptions : function (options)

{

this.options =

{

handle: this.drag, //事件对象

limit: true, //锁定范围

lock: false, //锁定位置

lockX: false, //锁定水平位置

lockY: false, //锁定垂直位置

maxContainer: document.documentElement || document.body, //指定限制容器

onStart: function () {}, //开始时回调函数

onMove: function () {}, //拖拽时回调函数

onStop: function () {} //停止时回调函数

};

for (var p in options) this.options[p] = options[p]

},

//获取id

$ : function (id)

{

return typeof id === "string" ? document.getElementById(id) : id

},

//添加绑定事件

addHandler : function (oElement, sEventType, fnHandler)

{

return oElement.addEventListener ? oElement.addEventListener(sEventType, fnHandler, false) : oElement.attachEvent("on" + sEventType, fnHandler)

},

//删除绑定事件

removeHandler : function (oElement, sEventType, fnHandler)

{

return oElement.removeEventListener ? oElement.removeEventListener(sEventType, fnHandler, false) : oElement.detachEvent("on" + sEventType, fnHandler)

},

//绑定事件到对象

bind : function (object, fnHandler)

{

return function ()

{

return fnHandler.apply(object, arguments)

}

}

};

//html 元素 拖拽效果js类 --end--

//拖拽效果

//应用

window.onload = function ()

{

var oBox = document.getElementById("termMoveBox");

var oTitle = document.getElementById("tContainer");

var oDrag = new Drag(oBox, {handle:oTitle, limit:false});

//开始拖拽时方法

oDrag.onMove = function ()

{

oSpan.innerHTML = "left:" + this.drag.offsetLeft + ", top:" + this.drag.offsetTop

};

};

//拖拽end

HEML部分：

<style type="text/css">

.moveTitle{

font-family: "Arial Negreta","Arial Normal","Arial";

font-size: 14px;

font-style: normal;

font-weight: 700;

text-align: center;

line-height: 30px;

}

.moveBox{

width: 700px;

height: 450px;

background: #fff;

border: 1px solid green;

z-index: 999;

position: fixed;

left: 810px;

top: 155px;

overflow: hidden;

}

.moveBoxHeader{

background: #ccc none repeat scroll 0 0;

width: 100%;

height: 30px;

border-bottom: 1px solid #FFFFFF;

}

.moveBoxHeader p{

line-height: 20px;

background-color: #E8F1FB;

width: 80px;

text-align:center;

border-radius: 3px;

font-weight: normal;

cursor: pointer;

}

#tContainer{

min-width: 700px;

}

.scrollBox{

overflow-y:scroll;

width: 699px;

height: 386px;

}

</style>

<div id="termMoveBox" class="moveBox none">

<form id="tContainer">

<div class="moveBoxHeader">

<table style="width:100%;height:100%;">

<tr>

<th class="moveTitle" style="width:110px;">{"已选中列表"|L}</th>

<th class="moveTitle" id="termClean" style="width:auto;text-align:left;"><p>{"清空选中"|L}</p></th>

<th class="moveTitle" style="width:50px;color:blue;">

<p id="termCheckClose" style="margin-left:20px;width:20px;font-weight:bold;">x</p>

</th>

</tr>

</table>

</div>

<table class="base full">

<tr class='head'>

<th style="width:9px;"></th>

<th style="width:108px;text-align:left;">{"状态"|L}</th>

<th id="tgImeiIccid" style="width:152px;text-align:left;">IMEI</th>

<th id="tgMeidNumber" style="width:152px;text-align:left;">MEID</th>

<th style="text-align:left;">{"系统号码"|L}</th>

<th style="text-align:left;">{"操作"|L}</th>

</tr>

</table>

</form>

<div class="scrollBox">

<table class="base full" id="termMoveTable">

{*<tr>

<td style="width:4px;"></td>

<td style="width:103px;text-align:left;">开启</td>

<td style="width:147px;text-align:left;">122112555655555</td>

<td style="width:149px;text-align:left;">45612347894561</td>

<td style="text-align:left;">8sd12334566</td>

<td style="text-align:left;"><span style="color:#317EF3;cursor:pointer;" onclick="delTmove(this)">{"删除"|L}</span></td>

</tr>*}

</table>

</div>

</div>