Extjs复习笔记（十八）-- TreePanel
Grid这一块暂时就讲到这。这一节开始就是tree的相关内容了。
[{ text: 'To Do', cls: 'folder', children: [{ text: 'Go jogging', leaf: true, checked: false },{ text: 'Take a nap', leaf: true, checked: false },{ text: 'Climb Everest', leaf: true, checked: false }]},{ text: 'Grocery List', cls: 'folder', children: [{ text: 'Bananas', leaf: true, checked: false },{ text: 'Milk', leaf: true, checked: false },{ text: 'Cereal', leaf: true, checked: false },{ text: 'Energy foods', cls: 'folder', children: [{ text: 'Coffee', leaf: true, checked: false },{ text: 'Red Bull', leaf: true, checked: false }] }]},{ text: 'Remodel Project', cls: 'folder', children: [{ text: 'Finish the budget', leaf: true, checked: false },{ text: 'Call contractors', leaf: true, checked: false },{ text: 'Choose design', leaf: true, checked: false }]}]