collapse mode 严重_extjs 布局中添加了collapseMode:'mini',就能出现小箭头折叠west 请问小箭头的click事件是什么？...

Ext.onReady(function() {

var nodeData = [{text:'node',leaf:false,children:[{text:'childNode',leaf:false,children:[{text:'hello',leaf:true}]}]}]

var panel = new Ext.Panel({

title:'点击下面的链接',

region:'center',

html:'折叠'

})

var treePanel = new Ext.tree.TreePanel({

region:'west',

title:'treePanel',

split:true,

id:'treePanel',

collapseMode:'mini',

splite:true,

widht:500,

useArrows:true,

lines:false,

root:new Ext.tree.TreeNode({

text:'Root'

})

});

treePanel.getRootNode().appendChild(nodeData);

var view = new Ext.Viewport({

layout:'border',

items:[

treePanel,panel

]

});

})

给你写了一个例子 运行一下 是你要的效果 测试过的