by Sai gowtham

How to find Object length in JavaScript

In this tutorial, we are going to learn about 3 different ways to find the JavaScript object length or size with the help of examples.

Object.keys

The Object.keys() method accepts the object as an argument and returns the array with enumerable properties.

We know that array has a length property so that by using the Object.keys() method returned array we can get the Object size.

Example:

const obj = {
  id:1,
  name: "sai",
  active: true
}

console.log(Object.keys(obj).length); // size is 3

Object.values

The Object.values() method returns the given object values in an array.

Example:

const obj = {
  id:1,
  name: "sai",
  active: true
}

console.log(Object.values(obj).length); // size is 3

Object.getOwnPropertyNames

The Object.getOwnPropertyNames() method returns an array with object keys this method is similar to Object.keys() method.

const obj = {
  id:1,
  name: "sai",
  active: true
}

console.log(Object.getOwnPropertyNames(obj).length);

// size is 3

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