javascript - 从键 1 开始的对象中的变换数组

Question

如果我有一个对象数组：

arr = [{from: 10, to: 20}, {from: 15, to: 25}]

我可以将它转换为一个对象：

const object = Object.assign({}, arr)

返回：

{
  0: {from: 10, to: 20},
  1: {from: 15, to: 25}
}

我该如何取而代之？

{
  1: {from: 10, to: 20},
  2: {from: 15, to: 25}
}

标签： javascriptarraysobject

Answer 1

问题≡(▔﹏▔)≡</h3>

您正在从中获取索引0。因为数组是 JavaScript 中的对象。所以索引充当对象的键。

例如，解构数组以获取第一个元素：

const array = [{from: 10, to: 20}, {from: 15, to: 25}];
const {0: first} = array;
console.log(first); // {from: 10, to: 20}

---

解决方案（❁´◡`❁）

所以你可以通过Array#reduce这样使用来实现它。

const array = [{from: 10, to: 20}, {from: 15, to: 25}];
const object = array.reduce((acc, curr, index) => (acc[index+1] = curr, acc), {})
console.log(object);