if you inspect treegrid.js
you’ll see that it requires treegrid.json
(JSON-formatted data file). when you visit http://24.177.214.232:8888/examples/tree/treegrid.json (which is the path where treegrid.js
expects treegrid.json
) you’ll see, that there is no such file.
fix the path or create a data file : )
EDIT
you can find proper JSON here: http://dev.sencha.com/deploy/ext-4.0.7-gpl/examples/tree/treegrid.json