使用getter和setter可以帮助我们在外部间接调用类中的私有属性。

    1. class Person {
    2.     constructor(private _name: string) {}
    3.   get name() {
    4.       return this._name + ' Lee'
    5.   }
    6.   set name() {
    7.       const realName = name.split(' ')[0]
    8.     this._name = realName
    9.   }
    10. }
    12. const person = new Person('Mike')
    13. console.log(person.name) //Mike Lee
    14. person.name = 'Mike Lee'
    15. console.log(person.name) //Mike Lee