匿名Multiple ComboTree
Click the right arrow button to show the tree panel and select multiple nodes.
示例：
代码：
<div style="margin:20px 0">
<span>Cascade Check: </span>
<input type="checkbox" checked onclick="$('#cc').combotree({cascadeCheck:$(this).is(':checked')})">
</div>
<div class="easyui-panel" style="width:100%;max-width:400px;padding:30px 60px;">
<div style="margin-bottom:20px">
<input id="cc" class="easyui-combotree" style="width:100%" data-options="
url:'examples/combotree/tree_data1.json',
method:'get',
label:'Select Nodes:',
labelPosition:'top',
multiple:true,
value:[122,124]
">
</div>
</div>