js object convert to array & js array convert to object

js object convert to array & js array convert to object

js 对象转成数组

const obj = { foo: "bar", baz: 42 };

const entries = Object.entries(obj);

console.log(entries);
// (2) [Array(2), Array(2)]

js 数组转成对象

const obj = { foo: "bar", baz: 42 };

const entries = Object.entries(obj);

console.log(entries);
// (2) [Array(2), Array(2)]

const new_obj = Object.fromEntries(entries);

console.log(new_obj);
// Object { foo: "bar", baz: 42 }

// Map
const entries = new Map([
  ['foo', 'bar'],
  ['baz', 42]
]);

const obj = Object.fromEntries(entries);

console.log(obj);
// Object { foo: "bar", baz: 42 }

refs

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from

---

---

©xgqfrms 2012-2020

www.cnblogs.com/xgqfrms 发布文章使用：只允许注册用户才可以访问！

原创文章，版权所有©️xgqfrms, 禁止转载 🈲️，侵权必究⚠️！

---