Javascript - 如何為 object 屬性使用變量

Question

我是 javascript 的初學者，我想使用在每個 object 屬性上創建的所有變量：

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,
      }

我想要這樣的結果=>

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

這可能嗎？

Answer 1

您可以使用object 屬性速記符號：

 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" } */

您還可以將值直接分配給 object 上的屬性，而不是首先在 scope 中聲明各個變量：

 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" } */