構造方法：

class Student{constructor (name,age){this.name =name;this.age=age;}run(){console.log("我會跑");}}let xs = new Student("曹偉",22);console.log(xs);//打印：Student {name: "曹偉", age: 22}。//constructor：實例化那些默認屬性。繼承：class Teacher extends Student{constructor (name,age,sex){super(name,age);this.sex=sex;}eat(){console.log(this.name +"is eating")}}var ls = new Teacher("美女","30","母");console.log(ls);//打印：Teacher {name: "美女", age: "30", sex: "母"}。ls.eat();//打印：老師is eating。//extends：繼承。//super：繼承屬性方法。注釋：在構造方法里的super是指反類的構造方法。

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get,set,static:class Student{constructor (name,age){this.name =name;this.age=age;}run(){console.log("我會跑");}get xm(){return this.name +"123";}set xm(value){this.name =value;}static shangxue (){console.log("去讀書");}}let xs = new Student("曹偉",25);console.log(xs.xm);xs.xm="騷胖";console.log(xs.xm);Student.shangxue();//get：獲取加賦值。//set：設置。//static：靜態方法|類方法。//set和get的方法名相同，而且可以同名方法重載|方法覆蓋:class Student{constructor (name,age){this.name =name;this.age=age;}run(){console.log("我會跑");}}let xs = new Student("曹偉",25);class Teacher extends Student{constructor (name,age,sex){super(name,age);this.sex=sex;}eat(){console.log(this.name +"is eating")} run(){super.run();console.log("我一直在跑");}}var ls = new Teacher("老師","30","男");ls.run();//我會跑 我一直在跑;注釋：雖然子類繼承了父類的run方法，但是子類會把父類的方法給覆蓋掉，這個就是方法覆蓋。

轉載于:https://www.cnblogs.com/GJcaowei/p/7197382.html

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