将JS数组中的键值对简化为object

const arr = [
  ["name", "John"],
  ["age", 30],
  ["city", "New York"]
];

const obj = arr.reduce((acc, [key, value]) => {
  acc[key] = value;
  return acc;
}, {});

console.log(obj);

{
  name: "John",
  age: 30,
  city: "New York"
}

const arr = [
  ["name", "John"],
  ["age", 30],
  ["city", "New York"]
];

const obj = Object.fromEntries(arr);

console.log(obj);

{
  name: "John",
  age: 30,
  city: "New York"
}