JavaScript：事件-VERSUS-回调

Question

JavaScript更合理/更快：使用callbacks()或对events作出反应？

JavaScript：回调

doSomething(function(){
   //one or more callbacks (onSuccess, onError, etc)
});

JavaScript：活动

function initSomething(){
   //do something
   $(document).trigger('reactOnEvent');    
}

$(document).on('reactOnEvent', function(){
   //callback via event
});
initSomething();