How to convert object into array?

How to convert an object to an array in JavaScript: Use Object.keys() to get an array of property keys. Use Object.values() to get an array of property values. Convert object key-value pairs to arrays using map() and Object.entries().

How to convert an object into an array

In JavaScript, there are several ways to convert an object into an array:

Use Object.keys()

const obj = { a: 1, b: 2, c: 3 };
const keys = Object.keys(obj); // ['a', 'b', 'c']

Use Object.values()

const values = Object.values(obj); // [1, 2, 3]

Use combined operations

const arr = [...Object.values(obj)]; // [1, 2, 3]

Use map() and Object.entries()

const entries = Object.entries(obj); // [['a', 1], ['b', 2], ['c', 3]]
const arr = entries.map(([key, value]) => value); // [1, 2, 3]

Practical case

Suppose we have an array of objects, and we want to get the array of id attribute values ​​of all objects:

const objects = [
  { id: 1, name: 'John' },
  { id: 2, name: 'Jane' },
  { id: 3, name: 'Bob' }
];

const ids = objects.map(({ id }) => id); // [1, 2, 3]

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