js链式调用

链式调用
class Person {
constructor() {
this._name = ‘’
this._age = 0
}

name(name) {
    this._name = name
    return this
}

age(age) {
    this._age = age
    return this
}

}

// 使用
let person = new Person().name(‘王昭君’).age(21)

class Person {
constructor() {
this._name = ‘’
this._age = 0
}

name(name) {
    this._name = name
    return this
}

age(age) {
    this._age = age
    return this
}

}

// 使用
let person = new Person().name(‘王昭君’).age(21)