JavaScript Object-oriented prototype inheritance

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<script type= "Text/javascript" >//Prototype chain inherit function shape () {this.name= "shape";           This.showname=function () {console.log (this.name); }} function Shape_two () {this.name= ' Shape_two '} function Triangle (side,height          ) {this.name= "Triangle";          This.side=side;          This.height=height;            This.getinfo=function () {console.log (this.side * THIS.HEIGHT/2);          }} shape_two.prototype=new shape ();          Triangle.prototype=new Shape_two ();          Shape_two.prototype.constructor=shape_two;          Triangle.prototype.constructor=triangle;          var mytri= new Triangle (10,8);          Console.log (Mytri.name);          Mytri.getinfo ();          Mytri.showname ();          Console.log (Mytri.constructor);          Console.log (Mytri instanceof Triangle);          Console.log (Mytri instanceof shape); Console.log (Mytri instanceof Shape_two);          Console.log (Mytri instanceof Array);              var mytri_2=new shape_two ();          Mytri_2.showname ();         var mytri_3= new shape ();         Console.log (Mytri_3.constructor);            function Shape_pro () {shape_pro.prototype.name= ' Shape_pro ';            Shape_pro.prototype.showname=function () {console.log (this.name);         }} function Shape_twopro () {};         Shape_twopro.prototype=new Shape_pro ();         Shape_twopro.prototype.constructor=shape_twopro;               Shape_pro.prototype.name= "Shape_twopro";            function Trianglepro (side,height) {this.side=side;        This.height=height;        } trianglepro.prototype=new Shape_twopro ();        Trianglepro.prototype.constructor=trianglepro;        Trianglepro.prototype.name= "Trianglepro";        Trianglepro.prototype.getarea=function () {console.log (THIS.SIDE*THIS.HEIGHT/2); } var newmytri= newTrianglepro (12,8);                 Newmytri.showname ();                 Newmytri.getarea ();      Console.time (Newmytri.getarea ());              Temporary constructor new F ();            function Shape_snap () {shape_snap.prototype.name= "snap";              Shape_snap.prototype.showname=function () {console.log (this.name);           }} function Shape_snaptwo () {};             var newf =function () {};            Newf.prototype=shape_snap.prototype;            Shape_snaptwo.prototype=new Newf ();            Shape_snaptwo.prototype.constructor=shape_snaptwo;                          Shape_snaptwo.prototype.name= ' Shape_snaptwo ';                 function Triangleshape (side,height) {this.side=side;             This.height=height;               } var newf =function () {};              Newf.prototype=shape_snaptwo.prototype;              Triangleshape.prototype=new Newf (); Triangleshape.prototype.construcTor=triangleshape;              Triangleshape.prototype.name= ' Triangleshape ';              Triangleshape.prototype.getarea=function () {console.log (THIS.SIDE*THIS.HEIGHT/2);               } var mytrinew=new triangleshape (10,20);              Mytrinew.getarea ();                var sname= new Shape_snap ();           Sname.showname ();                 Child object Access Parent object Uber function Shape_uber () {shape_uber.prototype.name= "Shape_uber";                     Shape_uber.prototype.showubername=function () {var result =[];                     if (This.constructor.uber) {result[result.length] =this.constructor.uber.showubername ();                      } result[result.length]=this.name;                 Return Result.join (', ');              }             };              function Shape_ubertwo () {};              var newf=function () {}; Newf.prototype=shaPe_uber.prototype;              Shape_ubertwo.prototype=new Newf ();              Shape_ubertwo.prototype.constructor=shape_ubertwo;              Shape_ubertwo.uber=shape_uber.prototype;              Shape_ubertwo.prototype.name= "Shape_ubertwo";                  function Shape_ubertriangle (side,height) {this.side=side;              This.height=height;              } var newf=function () {};             Newf.prototype=shape_ubertwo.prototype;             Shape_ubertriangle.prototype=new Newf ();             Shape_ubertriangle.prototype.constructor=shape_ubertriangle;             Shape_ubertriangle.uber=shape_ubertwo.prototype;             Shape_ubertriangle.prototype.name= ' Shape_ubertriangle ';             Shape_ubertriangle.prototype.getarea=function () {console.log (THIS.SIDE*THIS.HEIGHT/2);                                         } var mytridd= new Shape_ubertwo (); </script>

　　

JavaScript Object-oriented prototype inheritance