I'm a bit of a newb with both extJS and json. What is the most painless route to POSTing json data using extJS? I'm not really interested any GUI features, just using the framework to send some sample data.
Ext.Ajax.request({
url: 'foo.php', // where you wanna post
success: passFn, // function called on success
failure: failFn,
params: { foo: 'bar' } // your json data
});