/* Get Programming with JavaScript

 * Listing 12.03

 * Guess the number - using local scope

 */

​

var getGuesser = function () {

  var secret = 8;

​

  return function (userNumber) {

    if (userNumber === secret) {

      console.log("Well done!");

    } else {

      console.log("Unlucky, try again.");

    }

  };

};

​

var guess = getGuesser();

​

​

​

/* Further Adventures

 *

 * 1) Run the program.

 * 

 * The getGuesser and guess variables will be

 * added to the global scope, the collection of

 * variables avaialable on the console and

 * throughout the program.

 *

 * 2) At the prompt, type 'getGuesser' and

 *    press Enter.

 *

 * The value of the getGuesser variable will be

 * shown on the console. The value is a function

 * so the function will be displayed.

 *

 * Notice, JS Bin has replaced the calls to

 * console.log with its own logging function.

 *

 * 3) At the prompt, type 'guess' and

 *    press Enter.

 *

 * The value of guess is displayed.

 *

 * 4) At the prompt, type 'secret' and

 *    press Enter.

 *

 * secret is not a global variable. It is local

 * to the getGuesser function and cannot be accessed

 * on the console.

 *

 */