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      1. javascript筆試題

        時間:2020-11-25 18:22:06 筆試題目 我要投稿

        javascript筆試題

        javascript面向對象中繼承實現

        javascript筆試題

          javascript面向對象中的繼承實現一般都使用到了構造函數和Prototype原型鏈,簡單的代碼如下:

          function Animal(name) {

          this.name = name;

          }

          Animal.prototype.getName = function() {alert(this.name)}

          function Dog() {};

          Dog.prototype = new Animal("Buddy");

          Dog.prototype.constructor = Dog;

          var dog = new Dog();

         

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