CheckBox Selection on DataGrid

Click the checkbox on header to select or unselect all selections.

示例：

代码：

					
<table id="dg" class="easyui-datagrid" title="CheckBox Selection on DataGrid" style="width:700px;height:250px"
        data-options="
            rownumbers:true,
            singleSelect:true,
            url:'examples/datagrid/datagrid_data1.json',
            method:'get'
        ">
    <thead>
        <tr>
            <th data-options="field:'ck',checkbox:true"></th>
            <th data-options="field:'itemid',width:80">Item ID</th>
            <th data-options="field:'productid',width:100">Product</th>
            <th data-options="field:'listprice',width:80,align:'right'">List Price</th>
            <th data-options="field:'unitcost',width:80,align:'right'">Unit Cost</th>
            <th data-options="field:'attr1',width:220">Attribute</th>
            <th data-options="field:'status',width:60,align:'center'">Status</th>
        </tr>
    </thead>
</table>
<div style="margin:10px 0;">
    <span>Selection Mode: </span>
    <select onchange="$('#dg').datagrid({singleSelect:(this.value==0)})">
        <option value="0">Single Row</option>
        <option value="1">Multiple Rows</option>
    </select><br/>
    SelectOnCheck: <input type="checkbox" checked onchange="$('#dg').datagrid({selectOnCheck:$(this).is(':checked')})"><br/>
    CheckOnSelect: <input type="checkbox" checked onchange="$('#dg').datagrid({checkOnSelect:$(this).is(':checked')})">
</div>