How can I add a key/value pair to a JavaScript object?

Matheus Mello
Matheus Mello
September 2, 2023
Cover Image for How can I add a key/value pair to a JavaScript object?

📝 Adding a Key/Value Pair to a JavaScript Object: Easy Peasy! 🚀

So, you have this awesome JavaScript object, filled with key/value pairs. 🎉 But now, you're faced with a new challenge. You want to add another key/value pair to your existing object, but you're not quite sure how to do it. No worries, my friend! I've got you covered. 💪

🧩 The Challenge: A Missing Piece 🧩

Take a look at your object literal:

var obj = {key1: value1, key2: value2};

You want to add a key3 field with a corresponding value3, but how do you achieve this? 🤔

🌟 Simple Solutions to the Rescue! ✨

  1. 📌 Option 1: Dot Notation 🌟

    One way to add a new key/value pair is by using dot notation:

    obj.key3 = value3;

    See how beautiful and easy that was? JavaScript lets you access and add properties using the dot (.) notation. 🌈

  2. 📌 Option 2: Bracket Notation 🌟

    Another option, and equally powerful, is to use bracket notation:

    obj['key3'] = value3;

    The bracket notation permits you to access and add new properties using strings. It's like being part of an exclusive club for creative thinkers. 🎨

That's it! You've added a new key/value pair to your JavaScript object, and the possibilities are endless. 🚀

💥 Go Beyond and Ignite Innovation! 💥

Now that you know how to add a key/value pair like a pro, why not level up your JavaScript skills? Are you interested in deep-diving into object manipulation, exploring other data structures, or discovering more about JavaScript's hidden treasures? Leave a comment and let me know! I would be thrilled to create more content to help you on your coding journey. 🙌

Remember, the sky's the limit when it comes to coding! ✨

Keep hacking and stay awesome! 😎👩‍💻👨‍💻


Disclaimer: This blog post assumes you have a basic understanding of JavaScript. If you're just starting, don't worry! Dive into some beginner-friendly tutorials, and soon you'll be rocking this too! 💪

Take Your Tech Career to the Next Level

Our application tracking tool helps you manage your job search effectively. Stay organized, track your progress, and land your dream tech job faster.

Your Product
Product promotion

Share this article

More Articles You Might Like

Latest Articles

Cover Image for How can I echo a newline in a batch file?
batch-filenewlinewindows

How can I echo a newline in a batch file?

Published on March 20, 2060

🔥 💻 🆒 Title: "Getting a Fresh Start: How to Echo a Newline in a Batch File" Introduction: Hey there, tech enthusiasts! Have you ever found yourself in a sticky situation with your batch file output? We've got your back! In this exciting blog post, we

Cover Image for How do I run Redis on Windows?
rediswindows

How do I run Redis on Windows?

Published on March 19, 2060

# Running Redis on Windows: Easy Solutions for Redis Enthusiasts! 🚀 Redis is a powerful and popular in-memory data structure store that offers blazing-fast performance and versatility. However, if you're a Windows user, you might have stumbled upon the c

Cover Image for Best way to strip punctuation from a string
punctuationpythonstring

Best way to strip punctuation from a string

Published on November 1, 2057

# The Art of Stripping Punctuation: Simplifying Your Strings 💥✂️ Are you tired of dealing with pesky punctuation marks that cause chaos in your strings? Have no fear, for we have a solution that will strip those buggers away and leave your texts clean an

Cover Image for Purge or recreate a Ruby on Rails database
rakeruby-on-railsruby-on-rails-3

Purge or recreate a Ruby on Rails database

Published on November 27, 2032

# Purge or Recreate a Ruby on Rails Database: A Simple Guide 🚀 So, you have a Ruby on Rails database that's full of data, and you're now considering deleting everything and starting from scratch. Should you purge the database or recreate it? 🤔 Well, my