ext panel feature 初始化加载时默认为关闭状态

Question

如何做到使该插件默认为关闭，当前默认行展开，
有没有这方面的属性设置？

Answer 1

 collapsed : Boolean
true to render the panel collapsed, false to render it expanded.

Defaults to: false

Available since: 2.3.0

http://docs.sencha.com/extjs/4.1.3/#!/api/Ext.panel.Panel-cfg-collapsed