ES6在类构造函数中的解构 [英] ES6 Destructuring in Class constructor

问题描述

这听起来很荒谬，但请忍受我.我想知道是否在语言级别上支持将对象分解为构造函数中的类属性，例如

This may sound ridiculous but bear with me. I wonder if there is support on the language level to destructure object into class properties in constructor, e.g.

class Human {
    // normally
    constructor({ firstname, lastname }) {
        this.firstname = firstname;
        this.lastname = lastname;
        this.fullname = `${this.firstname} ${this.lastname}`;
    }

    // is this possible?
    // it doesn't have to be an assignment for `this`, just something
    // to assign a lot of properties in one statement
    constructor(human) {
        this = { firstname, lastname };
        this.fullname = `${this.firstname} ${this.lastname}`;
    }
}

推荐答案

您无法在该语言的任何位置分配给this.

You cannot assign to this anywhere in the language.

一种选择是合并到this或其他对象中:

One option is to merge into this or other object:

constructor(human) {
  Object.assign(this, human);
}

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