JavaScript類繼承詳解

1.原型鏈繼承
核心思想：將子類的原型（prototype）指向父類的對象。

function People(){
       this.name = 'Tan Lian';
       this.eat = function(){
           return "I am eating.";
       };
   }

   function Student(){}
   Student.prototype = new People(); //子類的原型指向父類的對象

   var test = new Student();
   alert(test.name);   //打印mike
   alert(test.eat());//打印I am eating.

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