Configuration required to get Sencha ExtJS TreeGrid example working

Question

Can someone help explain what configuration I\'m missing to get the Sencha Ext JS 4 framework TreeGrid sample working?

Here\'s what I\'ve done so far:

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Answer 1

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