Example of Arrow Functions

new.js

//ES6 arrow functions
var calculate = (x,y) => {
  return x + y;
}

var sayHello = (name) => {
  return "Hello " + name;
}

//or:

var calculate = (x,y) => x + y;

var sayHello = (name) => "Hello " + name;


calculate(5,10); //returns: 15
sayHello('Lee'); //returns: Hello Lee

old.js

//ES5 functions

var calculate = function(x,y){
  return x + y;
}

var sayHello = function(name){
  return "Hello " + name;
}

calculate(5,10); //returns: 15
sayHello('Lee'); //returns: Hello Lee