ext怎么在panel里面增加一棵树?Ext.onReady(function(){newExt.Panel({renderTo:quot;helloquot;,title:quot;quot;,//面板头部headerwidth:300,height:500,border:false,layout:quot;borderquot;,items:[{region:quot;southquot;,h

问题：ext怎么在panel里面增加一棵树?Ext.onReady(function(){newExt.Panel({renderTo:quot;helloquot;,title:quot;quot;,//面板头部headerwidth:300,height:500,border:false,layout:quot;borderquot;,items:[{region:quot;southquot;,height:400,width:100,id:#39;panel_hello#39;,title:quot;t1quot;,b

答案：↓↓↓

黄珍生的回答：

网友采纳　　Ext.onReady(function(){vartree=newExt.tree.TreePanel({title:"test",width:300,height:450,useArrows:true,//是否使用箭头样式autoScroll:true,//滚动条animate:true,//展开,收缩动画rootVisible:...