[ExtJs] - Ajax example

====== with Connection ===========

var conn = new Ext.data.Connection();
conn.request({
url: 'history.jsp',
method: 'POST',
params: {"metaID": metaID, columnName: field},
success: function(responseObject) {
showHistoryDialog(responseObject.responseText);
},
failure: function() {
}
});

====== with getForm().submit===========
nav.getForm().submit({
url: 'am-TaskManagement-Tasks-Value.htm',
params: {command: 'scheudleUpdate'},
method:'POST'
});