Javascript - 如何为 object 属性使用变量

Question

Im very beginner in javascript, i would like to use all variable created on each object property:

let title = "Les Miserables";
let resume = "Blabla blaaabla...";
let autor = "Victor Hugo"
let date = "1862"

const books = {
        title: title,
        resume: desc,
        autor: autor,
        date: date,
      }

I want a result like this =>

{ title:'Les Miserables', resume:'Blabla blaaabla...', autor:'Victor Hugo', date: '1862'}

Is this possible?

Answer 1

You can use object property shorthand notation :

 let title = "Les Miserables"; let resume = "Blabla blaaabla..."; let autor = "Victor Hugo"; let date = "1862"; const books = { title, resume, autor, date, }; console.log(books); /* Logs: { title: "Les Miserables", resume: "Blabla blaaabla...", autor: "Victor Hugo", date: "1862" } */

You can also assign the values directly to properties on the object instead of first declaring individual variables in the scope:

 const books = {}; books.title = "Les Miserables"; books.resume = "Blabla blaaabla..."; books.autor = "Victor Hugo"; books.date = "1862"; console.log(books); /* Logs: { title: "Les Miserables", resume: "Blabla blaaabla...", autor: "Victor Hugo", date: "1862" } */