ES6 使用“this”进行解构赋值

Question

The code below works. Is there a way that is more convenient, if possible even a one-liner?

const { nextUrl, posts } = await postService.getCommunityPosts(6);
this.communityPosts = posts;
this.nextUrl = nextUrl;

I know about giving destructured properties aliases but I don't think that helps in this case. MDN doesn't say anything about that case.

Answer 1

You can assign to the properties of an existing object by giving aliases and encapsulating the assignment in parentheses ( await codepen ).

 const demo = { nextUrl: 'nextUrl', posts: 'posts' }; const target = {}; // replace target with this ({ nextUrl: target.nextUrl, posts: target.communityPosts } = demo); console.log(target);

Answer 2

 function Person() { this.obj = { firstName: 'Dav', lastName: 'P' }; ({firstName: this.firstName, lastName: this.lastName} = this.obj); } let p = new Person(); console.log(p);

Answer 3

An alternative that doesn't require duplicate property keys that ({key1: this.key1, key2: this.key2} = ... does is to use Object.assign() .

 class X { constructor(properties) { ({...this} = properties); // Invalid destructuring assignment target } } x = new X({a: 3}); console.log(x);

 class X { constructor(properties) { Object.assign(this, properties); } } x = new X({a: 3}); console.log(x);