      
        function sayHello() {
      
          var say = function() { console.log(hello); }
      
          // Local variable that ends up within the closure 
      
          var hello = 'Hello, world!';
      
          return say;
      
        }
      
        var sayHelloClosure = sayHello(); 
      
        sayHelloClosure(); // ‘Hello, world!’

view raw sayHello.js hosted with ❤ by GitHub

	function sayHello() {
	var say = function() { console.log(hello); }
	// Local variable that ends up within the closure
	var hello = 'Hello, world!';
	return say;
	}
	var sayHelloClosure = sayHello();
	sayHelloClosure(); // ‘Hello, world!’