Logging the Duration of Ext Ajax Requests

The following snippet shows how to log the duration of ajax requests in your Ext JS application:

Ext.Ajax.on('beforerequest', function(conn, response, options){
    console.log("Requesting:" + response.url);
    console.time(response.url);
});
Ext.Ajax.on('requestcomplete', function(conn, response, options){
    console.timeEnd(options.url);
});

Note that this code uses console.time(), which is a non-standard feature and may not work in all browsers.