[code="js"]
Ext.onReady(function(){
var root=new Ext.tree.TreeNode({
id:"root",
text:"根"
});
var t1=new Ext.tree.TreeNode({
id:'t1',
icon:'icon.gif',
text:'child1'
});
var t2=new Ext.tree.TreeNode({
id:'t2',
icon:'icon.gif',
text:'child2'
});
root.appendChild(t1);
root.appendChild(t2);
var tree=new Ext.tree.TreePanel({
renderTo:document.body,
root:root,
rootVisible:true
});
})
[/code]