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Singleton Pattern

/ Published in: JavaScript
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  1. /**
  2.  * Example singleton
  3.  */
  4.  
  5.  
  6. Singleton = (function() {
  7.  
  8. 	return {
  9.  
  10.  
  11. 		/**
  12. 		 * Create a new dom node
  13. 		 *
  14. 		 * @param {String} className add a class to the node
  15. 		 * @param {String} nodeName the node to create
  16. 		 *
  17. 		 * @example
  18. 		 * <code>	
  19. 		 * 	Singleton.create('foo', 'span');
  20. 		 * </code>
  21. 		 *
  22. 		 * @return {HTML element} the new node
  23. 		 */
  24.  
  25. 		create : function( className, nodeName ) {
  26. 			nodeName = nodeName || 'div';
  27. 			var elem = doc.createElement( nodeName );
  28. 			elem.className = className;
  29. 			return elem;
  30. 		},
  31.  
  32. 		/**
  33. 		 * Appends a string to 'Hello '
  34. 		 *
  35. 		 * @param {String} str the string to append
  36. 		 *
  37. 		 * @example
  38. 		 * <code>
  39. 		 * 	Singleton.helloworld('world');
  40. 		 * </code>	
  41. 		 *
  42. 		 * @return {String} the modified string
  43. 		 */
  44.  
  45. 		helloworld : function( str ) {
  46. 			output = 'Hello ' + str;
  47. 			return output;
  48. 		}
  49.  
  50. 	}
  51.  
  52. })();

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