Ajax.BeginForm, Calls Action, Returns JSON, How do I access JSON object in my OnSuccess JS Function?

Question

Ajax.BeginForm calls an action and then returns JSON. How do I access JSON object in my OnComplete js function?

so my Ajax.BeginForm<

Answer 1

in asp.net mvc 4

function CouponSubmitted(data) {
    alert(data.success); 
}

will return parsed 'json'