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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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.container ul{
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width: 450px;
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padding: 15px;
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background-color:#FFFFF0;
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margin:20px;
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display: block;
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float: left;
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border-radius: 5px;
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border: 1px solid #bbb;
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}
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.container ul li{
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display: block;
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float: left;
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width: 80px;
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height: 65px;
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float:left;
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margin-left: 6px;
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border-radius: 4px;
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padding: 0;
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list-style: none;
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background-color:#F8F8F8;
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margin-bottom:10px;
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-moz-user-select: none;
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user-select: none;
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margin-top: 30px;
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color: #555;
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}.ccontainer ul{
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width: 450px;
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padding: 15px;
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/*min-height:250px;*/
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background-color:#FFFFF0;
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margin:20px;
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display: block;
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float: left;
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border-radius: 5px;
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border: 1px solid #bbb;
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}
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.ccontainer ul li{
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display: block;
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float: left;
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width: 80px;
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height: 65px;
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float:left;
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margin-left: 6px;
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border-radius: 4px;
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padding: 0;
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list-style: none;
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background-color:#F8F8F8;
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margin-bottom:10px;
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-moz-user-select: none;
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user-select: none;
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margin-top: 30px;
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color: #555;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<ul class="weise">
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<volist name=":get_kuaijie(1)" id="my">
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<li data-v="{$my.value}" ><img src="{:get_cover($my['value'],'path')}" />{$my.title}</li>
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</volist>
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</ul>
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<ul>
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<volist name=":get_kuaijie(2)" id="wei">
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<li data-v="{$wei.value}"><img src="{:get_cover($wei['value'],'path')}" />{$wei.title}</li>
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</volist>
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</ul>
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</div>
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<div class="ccontainer">
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<ul>
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<li id="huifu"><div>恢复默认设置</div></li>
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<li id="save"><div>保存</div></li>
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</ul>
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</div>
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<script type="text/javascript" src="__STATIC__/jquery-2.0.3.min.js"></script>
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<script src="__STATIC__/layer/layer.js" type="text/javascript"></script>
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<script type="text/javascript">
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$(function(){
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//出入允许拖拽节点的父容器，一般是ul外层的容器
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drag.init('container');
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$("#huifu").click(function(){
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top.location.reload();
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});
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$("#save").click(function(){
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var $sees='';
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$(".weise li").each(function(){
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$sees=$sees+$(this).attr('data-v')+',';
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});
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$.ajax({
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type: "post",
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url: '{:U("Index/savekuaijie")}',
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data: {kuaijie:$sees},
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dataType: "json",
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success: function(data){
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if(data.status){
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layer.msg('保存成功');
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}else{
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layer.msg('保存失败');
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}
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top.location.reload();
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},
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error:function(){
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alert("服务器故障！");
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}
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});
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});
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});
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/** 拖拽功能实现原理和说明：
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1、说明：拖拽实现一般有两种方式，一种是使用html的新特性dragable，但是由于在火狐浏览器上dragable每拖拽一次会打开一个新的标签，
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尝试阻止默认行为和冒泡都无法解决，所以使用第二种方法来实现拖拽。第二种方法是使用js监听鼠标三个事件，配合节点操作来实现。
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2、实现原理：
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01-在允许拖拽的节点元素上，使用on来监听mousedown(按下鼠标按钮)事件，鼠标按下后，克隆当前节点
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02-监听mousemove(鼠标移动)事件，修改克隆出来的节点的坐标，实现节点跟随鼠标的效果
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03-监听mouseup(放开鼠标按钮)事件，将原节点克隆到鼠标放下位置的容器里，删除原节点，拖拽完成。
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3、优势：
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01-可动态添加允许拖拽的节点(因为使用了on委托事件)
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02-可获取到原节点，跟随节点，目标节点的对象，可根据需要进行操作。
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03-使用js实现，兼容性好。
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**/
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//拖拽
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var drag = {
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class_name : null, //允许放置的容器
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permitDrag : false, //是否允许移动标识
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_x : 0, //节点x坐标
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_y : 0, //节点y坐标
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_left : 0, //光标与节点坐标的距离
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_top : 0, //光标与节点坐标的距离
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old_elm : null, //拖拽原节点
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tmp_elm : null, //跟随光标移动的临时节点
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new_elm : null, //拖拽完成后添加的新节点
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//初始化
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init : function (className){
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//允许拖拽节点的父容器的classname(可按照需要，修改为id或其他)
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drag.class_name = className;
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//监听鼠标按下事件，动态绑定要拖拽的节点（因为节点可能是动态添加的）
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$('.' + drag.class_name).on('mousedown', 'ul li', function(event){
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//当在允许拖拽的节点上监听到点击事件，将标识设置为可以拖拽
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drag.permitDrag = true;
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//获取到拖拽的原节点对象
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drag.old_elm = $(this);
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//执行开始拖拽的操作
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drag.mousedown(event);
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return false;
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});
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//监听鼠标移动
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$(document).mousemove(function(event){
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//判断拖拽标识是否为允许，否则不进行操作
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if(!drag.permitDrag) return false;
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//执行移动的操作
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drag.mousemove(event);
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return false;
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});
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//监听鼠标放开
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$(document).mouseup(function(event){
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//判断拖拽标识是否为允许，否则不进行操作
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if(!drag.permitDrag) return false;
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//拖拽结束后恢复标识到初始状态
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drag.permitDrag = false;
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//执行拖拽结束后的操作
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drag.mouseup(event);
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return false;
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});
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},
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//按下鼠标 执行的操作
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mousedown : function (event){
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console.log('我被mousedown了');
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//1.克隆临时节点，跟随鼠标进行移动
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drag.tmp_elm = $(drag.old_elm).clone();
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//2.计算 节点 和 光标 的坐标
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drag._x = $(drag.old_elm).offset().left;
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drag._y = $(drag.old_elm).offset().top;
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var e = event || window.event;
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drag._left = e.pageX - drag._x;
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drag._top = e.pageY - drag._y;
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//3.修改克隆节点的坐标，实现跟随鼠标进行移动的效果
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$(drag.tmp_elm).css({
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'position' : 'absolute',
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'background-color' : '#FF8C69',
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'left' : drag._x-5,
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'top' : drag._y-30,
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});
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//4.添加临时节点
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tmp = $(drag.old_elm).parent().append(drag.tmp_elm);
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drag.tmp_elm = $(tmp).find(drag.tmp_elm);
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$(drag.tmp_elm).css('cursor', 'move');
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},
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//移动鼠标 执行的操作
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mousemove : function (event){
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console.log('我被mousemove了');
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//2.计算坐标
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var e = event || window.event;
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var x = e.pageX - drag._left;
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var y = e.pageY - drag._top;
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var maxL = $(document).width() - $(drag.old_elm).outerWidth();
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var maxT = $(document).height() - $(drag.old_elm).outerHeight();
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//不允许超出浏览器范围
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x = x < 0 ? 0: x;
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x = x > maxL ? maxL: x;
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y = y < 0 ? 0: y;
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y = y > maxT ? maxT: y;
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//3.修改克隆节点的坐标
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$(drag.tmp_elm).css({
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'left' : x-5,
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'top' : y-30,
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});
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//判断当前容器是否允许放置节点
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$.each($('.' + drag.class_name + ' ul'), function(index, value){
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//获取容器的坐标范围 (区域)
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var box_x = $(value).offset().left; //容器左上角x坐标
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var box_y = $(value).offset().top; //容器左上角y坐标
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var box_width = $(value).outerWidth(); //容器宽
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var box_height = $(value).outerHeight();//容器高
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//给可以放置的容器加背景色
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if(e.pageX > box_x && e.pageX < box_x-0+box_width && e.pageY > box_y && e.pageY < box_y-0+box_height){
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//判断是否不在原来的容器下（使用坐标进行判断：x、y任意一个坐标不等于原坐标，则表示不是原来的容器）
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if($(value).offset().left !== drag.old_elm.parent().offset().left
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|| $(value).offset().top !== drag.old_elm.parent().offset().top){
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$(value).css('background-color', '#FFEFD5');
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}
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}else{
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//恢复容器原背景色
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$(value).css('background-color', '#FFFFF0');
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}
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});
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},
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//放开鼠标 执行的操作
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mouseup : function (event){
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console.log('我被mouseup了');
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//移除临时节点
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$(drag.tmp_elm).remove();
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//判断所在区域是否允许放置节点
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var e = event || window.event;
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$.each($('.' + drag.class_name + ' ul'), function(index, value){
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//获取容器的坐标范围 (区域)
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var box_x = $(value).offset().left; //容器左上角x坐标
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var box_y = $(value).offset().top; //容器左上角y坐标
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var box_width = $(value).outerWidth(); //容器宽
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var box_height = $(value).outerHeight();//容器高
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//判断放开鼠标位置是否想允许放置的容器范围内
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if(e.pageX > box_x && e.pageX < box_x-0+box_width && e.pageY > box_y && e.pageY < box_y-0+box_height){
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//判断是否不在原来的容器下（使用坐标进行判断：x、y任意一个坐标不等于原坐标，则表示不是原来的容器）
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// &&$('.weise li').length<10
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// console.log($(value).offset().left,drag.old_elm.parent().offset().left);
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if($(value).offset().left!==drag.old_elm.parent().offset().left&&$(this).attr('class')=='weise'&&$('.weise li').length>=10){
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console.log('超过10个了');
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}else{
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if($(value).offset().left !== drag.old_elm.parent().offset().left
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|| $(value).offset().top !== drag.old_elm.parent().offset().top){
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//向目标容器添加节点并删除原节点
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tmp = $(drag.old_elm).clone();
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var newObj = $(value).append(tmp);
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$(drag.old_elm).remove();
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//获取新添加节点的对象
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drag.new_elm = $(newObj).find(tmp);
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}
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}
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}
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//恢复容器原背景色
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$(value).css('background-color', '#FFFFF0');
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});
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},
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};
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</script>
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</body>
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</html>
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