ExtJS4 assigns different tree menus to different roles after login

Continue with my previous post, set the cookies and take them out

 
var userName = Ext.util.Cookies.get('userName'); 
var userAuthority = Ext.util.Cookies.get('userAuthority');//0,1,2 

And then you can use it

 
//The tree menu is displayed according to different permissions
var treeUrl='../store/ccTree'+userAuthority+'.json'; 


var treeStore = Ext.create('Ext.data.TreeStore', { 

proxy:{ 
type:'ajax', 
url:treeUrl 
} 
}); 

My tree menu is read locally with the names cctree0.json ~ cctreee2.json

Just use this treeStore to create the tree menu, which is omitted below

 
//The tree menu

var menuTree=Ext.create('Ext.tree.Panel', { 
// title: 'Simple Tree', 
width: 200, 
height: 650, 
useArrows:true, 
store: treeStore,//Quote here
rootVisible: false, 
renderTo: Ext.getBody(), 
listeners:{ 
itemclick: function(view,rec,el,index,e) { 
// alert(rec.id); 
if(rec.raw.id=="01"){//I'm going to do the same thing with the first one

Paste the json content below for your reference

 
[ 
{id:"01",text:" The first one ",expanded:false,leaf:true,"children":[ 

],url:'login.html'}, 
{id:"02",text:" The second ",expanded:true,"children":[ 
{id:"021",text:" The third ",leaf:true}, 
{id:"022",text:" The fourth ",leaf:true} 

]}, 
{id:"03",text:" The fifth ",expanded:true,"children":[ 
{id:"031",text:" The sixth ",leaf:true}, 
{id:"032",text:" The seventh ",leaf:true} 

]} 

] 

The above is just a way I came up with to achieve user classification... Leave a message if there's a better way. thank you