What's wrong of my first dhtmlxtree page

hi,all
i am a beginner of DHX. I begin to research tree component today. I write a sample page but it doesn’t work, who can help me to solve this issue. thanks a lot in advance.

The following is my code:

New Document

cbyyni
11-14

Hi
Some methods need extension file.
Method loadJSArray() need too. It need an extension dhtmlxtree_json.js :
docs.dhtmlx.com/doku.php?id=dhtm … djsarray&s[]=loadJSArray
You need include it in your library:

hi, darya :

 Thank you vary much for your reply. I have added that js file to my page, it work fine.

cbyyni
11-15

You are welcome!