topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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professional-javascript-04-zInheritExample3.htm / htm



  <html>
  <head>
  <title>Example</title>
          <script type="text/javascript" src="zinherit.js"></script>
  </head>
  <body>
  <script type="text/javascript">
  function ClassX() {
      this.messageX = "This is the X message.";
  
      if (typeof ClassX._initialized == "undefined") {
          
          ClassX.prototype.sayMessageX = function () {
              alert(this.messageX);
          };
  
          ClassX._initialized = true;
      }
  }
  
  function ClassY() {
      this.messageY = "This is the Y message.";
  
      if (typeof ClassY._initialized == "undefined") {
          
          ClassY.prototype.sayMessageY = function () {
              alert(this.messageY);
          };
  
          ClassY._initialized = true;
      }
  }
  
  function ClassZ() {
      ClassX.apply(this);
      ClassY.apply(this);
      this.messageZ = "This is the Z message.";
  
      if (typeof ClassZ._initialized == "undefined") {
          
          ClassZ.prototype.inheritFrom(ClassX);
          ClassZ.prototype.inheritFrom(ClassY);
  
          ClassZ.prototype.sayMessageZ = function () {
              alert(this.messageZ);
          };
  
          ClassZ._initialized = true;
      }
  }
  
  var objZ = new ClassZ();
  objZ.sayMessageX();
  objZ.sayMessageY();
  objZ.sayMessageZ();
  </script>
   
  </body>
  </html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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