多态测试_02
结论:默认 (子类)TbaseB的原型链里面没有 (父类)TbaseA的原型链中的函数...
1、测试代码
1 <html> 2 3 <script type="text/javascript"> 4 window.onload = function() 5 { 6 var b = new TbaseB(1); 7 b.SayHi(); 8 }; 9 10 function TbaseA(_i) 11 { 12 } 13 14 TbaseA.prototype = 15 { 16 SayHi : function() 17 { 18 console.log("TbaseA.SayHi()"); 19 console.log("this.Fb(TbaseA) : "+this.Fb); 20 }, 21 }; 22 23 function TbaseB(_i) 24 { 25 this.baseA = TbaseA; 26 this.baseA(_i); 27 delete this.baseA; 28 29 this.Fb = 1; 30 } 31 32 </script> 33 34 </html>
chrome(版本 49.0.2623.112 m) 控制台输出信息为:
zzz.html:7 Uncaught TypeError: b.SayHi is not a function
2、