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How to Find Object Length in JavaScript

Oct 01, 2024

Hey everyone, today I'm going to show you how to find the length of an object in JavaScript. Let's get started! So, there are a couple of ways to do this. The first method is by using Object.keys. Object.keys() returns an array of a given object's property names, so you can easily find the length of the array with the length property. Here's an example:

const myObject = {name: 'John', age: 25, city: 'New York'};

const objectLength = Object.keys(myObject).length;

console.log(objectLength);

In this example, we first create an object called myObject, and then we use Object.keys to get an array of its property names. Finally, we use the length property to get the length of the array, which gives us the length of the object. Another method is by using Object.entries. Object.entries() returns an array of a given object's own enumerable string-keyed property [key, value] pairs, so you can easily find the length of the array with the length property. Here's an example:

const anotherObject = {name: 'Jane', age: 30, city: 'Los Angeles'};

const anotherObjectLength = Object.entries(anotherObject).length;

console.log(anotherObjectLength);

In this example, we create another object called anotherObject, and then we use Object.entries to get an array of its [key, value] pairs. Once again, we use the length property to get the length of the array, which gives us the length of the object. So, there you have it! Those are two simple and efficient ways to find the length of an object in JavaScript. Give it a try and let me know how it goes! Don't forget to like and share this video if you found it helpful. Thanks for watching, and happy coding!

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