ES6 Super 关键字

function notifyAll(fnSms, fnEmail) {   
   console.log('starting notification process');   
   fnSms();   
   fnEmail();   
}   
notifyAll(function() {   
   console.log("Sms send ..");   
},
function() {   
   console.log("email send ..");   
});   
console.log("End of script");
//executes last or blocked by other methods