jQuery EasyUI treegrid 增删改查 - 2

<div style="margin:10px 0;">
		<a href="javascript:void(0)" class="easyui-linkbutton" onclick="edit()">Edit</a>
		<a href="javascript:void(0)" class="easyui-linkbutton" onclick="insert()">Insert</a>
		<a href="javascript:void(0)" class="easyui-linkbutton" onclick="deleteRow()">Delete</a>
	</div>
	<table id="tg" class="easyui-treegrid" title="Editable TreeGrid" style="width:700px;"
			data-options="
				iconCls: 'icon-ok',
				rownumbers: true,
				animate: true,
				collapsible: true,
				fitColumns: true,
				url: '../treegrid/treegrid_data2.json',
				idField: 'id',
				treeField: 'name',
				showFooter: true
			">
		<thead>
			<tr>
				<th data-options="field:'name',width:180,editor:'text'">Task Name</th>
				<th data-options="field:'persons',width:60,align:'right',editor:'numberbox'">Persons</th>
				<th data-options="field:'begin',width:80,editor:'datebox'">Begin Date</th>
				<th data-options="field:'end',width:80,editor:'datebox'">End Date</th>
				<th data-options="field:'progress',width:120,formatter:formatProgress,editor:'numberbox'">Progress</th>
			</tr>
		</thead>
	</table>