JQueryEasyUI实现两个树之间的数据移动

<fieldset>
                        <table border="0" >
                        <td>选择外包机具：
                        <fieldset>
                        <ul id="tt" class="easyui-tree" url="../../json/treegrid.json" checkbox="true" style="width:300px;height:280px" >
                    
                        </ul> 
                        </fieldset>
                        </td>
                        <td>
                            <a href="#" onclick="toRight()" class="easyui-linkbutton" data-options="iconCls:‘icon-redo‘" ></a><br/>
                            <a href="#" onclick="toLeft()" class="easyui-linkbutton" data-options="iconCls:‘icon-back‘"></a>                        
                        </td>
                        <td>
                        <fieldset>
                        <ul id="tt1" class="easyui-tree" url="" checkbox="true" style="width:300px;height:280px" >
                    
                        </ul> 
                        </fieldset>
                        </td>
                    </table>
                    </td>
                    </fieldset>

<script type="text/javascript">
    function toRight(){
        moveData(true);
    }
    function toLeft(){
        moveData(false);
    }
    function moveData(FLAG) {//将source中的数据移动到target中
        var source = $(FLAG ? ‘#tt‘ : ‘#tt1‘), target = $(FLAG ? ‘#tt1‘ : ‘#tt‘);
        var checked = source.tree(‘getChecked‘);//获取选中的数据
        if (checked.length == 0) { 
            $.messager.alert(‘消息框‘,‘请选择机具！‘,‘warning‘);
            return false; 
        }
        for (var i = checked.length - 1; i >= 0; i--) {
            if (source.tree(‘isLeaf‘, checked[i].target)) {
                //移动叶子节点到target树中，其父节点无需移动，通过getParent方法自动建立
                moveNode(source, target, checked[i]);
            }
        }
        //移除节点
        for (var i = checked.length - 1; i >= 0; i--) {
            source.tree(‘remove‘, checked[i].target);
        }
    }
    function moveNode(source, target, node) { //建立节点的路径
        var pNode, pNodeData = [], pid;
        pNode = source.tree(‘getParent‘, node.target); //收集父节点
        pid = pNode.id;
        do {
            if (pNodeData.length > 0) 
                pNodeData[pNodeData.length - 1].pid = pNode.id; //更新上一个父节点的父节点id
            pNodeData.push({ text: pNode.text, id: pNode.id });
        }
        while (pNode = source.tree(‘getParent‘, pNode.target));
        //从根节点建立路径
        for (var i = pNodeData.length - 1; i >= 0; i--) {
            if (!target.tree(‘find‘, pNodeData[i].id)) {
                target.tree(‘append‘, { 
                    parent: pNodeData[i].pid ? target.tree(‘find‘, pNodeData[i].pid).target : null, 
                    data: { 
                        text: pNodeData[i].text, 
                        id: pNodeData[i].id
                    } 
                });
            }
        }
        target.tree(‘append‘, { 
            parent: target.tree(‘find‘, pid).target, 
            data: { 
                text: node.text, 
                id: node.id
            } 
        });
    }
</script>