How to bind Data for Extjs grid 4 using json data

I am reseaching about extjs gid 4. I have done ok with Array data but when i use json it not ok. Could you help me . what are js files开发者_开发知识库 i need to add on website. If you can, could you give me detail about it.

Thank Nguyen

For JSON data you must use Ext.data.JsonStore. This store is a default Ext.data.Store wich is configured with Ext.data.reader.Json. Also you can create your own DataReader for custom data models.