javascript - 获取数组中对象中键值对的值

Question

我想value在一个新数组中获取属性的值。对于以下示例，结果将是：["Plumbing", "Electrical", "Fencing"]

const arr = [
  { label: "Plumbing", value: "Plumbing" },
  { label: "Electrical", value: "Electrical" },
  { label: "Fencing", value: "Fencing" },
];

我的意思是：newArray = currentArray forEach Get Value

标签： javascript

Answer 1

label您可以使用map轻松获取 all 的值

const arr = [
  { label: "Plumbing", value: "Plumbing" },
  { label: "Electrical", value: "Electrical" },
  { label: "Fencing", value: "Fencing" },
];

const result = arr.map((o) => o.value);
console.log(result);

您还可以解构以使其更简洁

const result = arr.map(({ value }) => value);

const arr = [
  { label: "Plumbing", value: "Plumbing" },
  { label: "Electrical", value: "Electrical" },
  { label: "Fencing", value: "Fencing" },
];

const result = arr.map(({ value }) => value);
console.log(result);