Difference between Object.keys() and Object.entries() methods in JavaScript

Last Updated : 12 Jul, 2025

Object.keys() and Object.entries() are methods in JavaScript used to iterate over the properties of an object. They differ in how they provide access to object properties:

Object.keys() returns an array of a given object's own enumerable property names, while Object.entries() returns an array of a given object's own enumerable string-keyed property [key, value] pairs.

Table of Content

Object.keys()
Object.entries()

Object.keys()

Object.keys() iterates over an object's own enumerable properties, returning an array containing the keys of those properties.

Example: To demonstrate the implementation of the Object.Keys() method in JavaScript.

JavaScript

const obj = {
    name: 'John',
    age: 30,
    city: 'New York'
};

const keys = Object.keys(obj);
console.log(keys);

Output

[ 'name', 'age', 'city' ]

Object.entries()

Object.entries() iterates over an object's own enumerable string-keyed property [key, value] pairs, returning an array of arrays.

Example: To demonstrate the implementation of the Object.entries() method in JavaScript.

JavaScript

const obj = {
    name: 'John',
    age: 30,
    city: 'New York'
};

const entries = Object.entries(obj);
console.log(entries);

Output

[ [ 'name', 'John' ], [ 'age', 30 ], [ 'city', 'New York' ] ]