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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## 原型繼承 繼承:是類型和類型之間的關系. 繼承目的:把子類型中共同的成員提取到父類型中,代碼重用. ``` function Person(){ this.name = 'jack'; this.age; this.gender; } function Student(){ this.score = 100; } Student.prototype = new Person(); //原型繼承,這里只繼承了一次,多次調用很不方便 Student.prototype.constructor = Student; //必須指定構造函數 var s1 = new Student(); //原型繼承無法設置構造函數的參數 console.log(s1.constructor); function Teacher(){ this.salary = 3000; } ```
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                              哎呀哎呀视频在线观看