JavaScript Singleton

singleton.js

/* Author: 
- Félix Bellanger <felix.bellanger@gmail.com>
*/

var Singleton = (function() {

  var instance = null;

  function init(options) {

    // Protected methods and variables
    options || (options = {});

    return {

      // Public methods and variables

    };
  };

  return {

    getInstance: function() {
      if (!instance) {
        instance = init();
      }
      return instance;
    }

  };

})();