Can you tell us about the formatter in ui5 and how to use it?

The formatter is used in ui5 when any changes have to be performed on the back end property data. The entire backend executions are done considering the front and property data. As a formatter can be used while data binding to any property which follows as-

ocontrol = new sap.ui.commons.TextField({

value: {path: "/path", formatter (o Event){

return "Value:" + o Event:

}}});