10 Exciting JavaScript Cheat Sheets for Developers and Learners

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As a fellow JavaScript developer, I know firsthand how challenging it can be to remember the endless number of methods, syntax rules, and programming patterns required in this language. With the rise in popularity of front-end JavaScript frameworks like React, Angular, and Vue.js, it‘s more important than ever to have quick references available.

This is why I‘m so enthusiastic about JavaScript cheat sheets – they enable developers like you and me to code more efficiently and learn new concepts faster. In this post, I‘ll highlight 10 of my favorite JavaScript cheat sheets for developers of all skill levels. I‘ve included thorough explanations, expert tips, and recommendations based on my 10+ years of web development experience.

The Popularity and Utility of JavaScript Cheat Sheets

Let‘s start by looking at some statistics that highlight the value of JavaScript cheat sheets:

  • 97.4% of all websites use JavaScript – it‘s the most commonly used programming language on the web according to W3Techs.

  • There are over 1.6 million JavaScript developers worldwide according to Evans Data Corporation.

  • JavaScript ranks in the top 5 programming languages in terms of usage and popularity according to the TIOBE Index.

With JavaScript being used by millions of developers across frameworks like React, Angular, Vue, Node.js, and vanilla JavaScript, it‘s no wonder quality cheat sheets are in high demand. These resources help developers like you and me work more efficiently and learn faster by providing quick references for syntax, patterns, methods, and concepts we use often but don‘t always memorize.

I rely on JavaScript cheat sheets on a daily basis as a senior front-end engineer. My favorites are those that organize information clearly, include useful examples, and focus on practical coding needs. In this post, I‘ve hand-picked the best of the best to share with fellow developers.

Beginner JavaScript Cheat Sheets

If you‘re just getting started with JavaScript, these basic cheat sheets will come in handy. They provide introductions to fundamental building blocks like variables, data types, arrays, conditionals, loops, functions, and more. Refer back to these when starting new projects to brush up on the basics.

1. Codecademy JavaScript Cheat Sheet

Codecademy‘s cheat sheet is a stellar reference for JavaScript fundamentals…

2. JavaScript For Cats

This beginner cheat sheet uses simple explanations and diagrams that are perfect for visual learners…

3. Learn X in Y Minutes JavaScript

This concise JavaScript overview is useful for skimming before interviews or as a quick refresher…

Intermediate JavaScript Cheat Sheets

Once you have the basics down, these intermediate cheat sheets will level up your skills. Refer to them when you need a quick recap on array methods, DOM manipulation, ES6+ features and more.

4. JavaScript Array Cheat Sheet

For times when you forget how to map, filter, or reduce an array, this visual cheat sheet will save you…

5. 30 Seconds of Code JavaScript Snippets

This collection of common snippets is great when you know what you want to do but can‘t remember the exact syntax…

6. JavaScript Cheat Sheet from WebsiteSetup

This comprehensive 6-page cheat sheet covers intermediate topics like arrow functions, template literals, promises, and async/await…

Advanced JavaScript Cheat Sheets

These cheat sheets help fill in gaps in your knowledge of advanced topics like regular expressions, ES6 features, design patterns, and more.

7. Wes Bos ES6 Cheatsheet

Packed with ES6 features like arrow functions, destructuring, spreads, and promises, this 3-page cheatsheet will level up your skills…

8. JavaScript Regular Expressions Cheat Sheet

This condensed regex cheat sheet includes anchors, quantifiers, groups, and lookaheads – perfect for times when you forget syntax…

9. Design Patterns JavaScript Cheat Sheet

This in-depth guide with real code examples covers 23 classic design patterns like the observer, strategy, and proxy…

Comparing Cheat Sheet Formats

JavaScript cheat sheets come in a variety of formats, each with their own pros and cons:

Webpages – Easy to search, share links, and access from any device. Can be cluttered with ads.

PDFs – Downloadable for offline access. Hard to quickly scan and search contents.

Markdown/GitHub – Lightweight text formatting. Easy to version control and update.

Online Courses – Interactive coding challenges reinforce concepts. Can get expensive.

Flashcards – Portable and perfect for memorization. Not always comprehensive.

I recommend having a mix of digital cheat sheets for quick lookups and printable PDFs for in-depth offline study. Flashcards are also great for memorizing functions, methods, and syntax you use often.

Customizing Your Own Cheat Sheets

While premade cheat sheets are great, I also recommend creating your own tailored to the specific JavaScript libraries, frameworks, and tools you use regularly.

Add snippets you find yourself googling frequently. Organize them by topic area or project. Including personalized examples of how you use things like Lodash methods or date handling will make a world of difference.

Consider also maintaining a general JavaScript cheat sheet with code comments explaining concepts like closures, prototypes, and callbacks in your own words. These fundamentals trip up even experienced developers, so having your own reminders is invaluable.


JavaScript cheat sheets enable developers like you and me to improve our craft by providing quick references for concepts we can‘t always remember. Whether you‘re a beginner starting out or a pro learning new frameworks, having quality cheat sheets on hand is a must.

I hope this collection gives you a head start. Don‘t be afraid to tweak and customize them to best suit your needs. Your future self will thank you the next time you‘re stuck in a coding pickle!


Written by Alexis Kestler

A female web designer and programmer - Now is a 36-year IT professional with over 15 years of experience living in NorCal. I enjoy keeping my feet wet in the world of technology through reading, working, and researching topics that pique my interest.