30 Days of JavaScript: Building a Portfolio Website, Day 30
You’ve spent 29 days writing JavaScript. This is where the series ends, and it’s the one day that pays the other
30 Days
Embark on a 30-day learning journey, with daily lessons designed to quickly elevate your web development skills in various technologies.
30 Days of JavaScript: Web Security and JavaScript, Day 29
One unescaped string is all it takes. A comment box, a search field, a URL parameter, someone drops a <script> tag
30 Days of JavaScript: Web Workers and Multithreading, Day 28
You have hit this bug even if you never named it. Click a button, the page locks up for half a
30 Days of JavaScript: Server-Side Rendering with JavaScript, Day 27
Day 27 of the 30-day JavaScript journey. So far most of what we’ve built renders in the browser: the server ships
30 Days of JavaScript: WebSockets and Real-Time Communication, Day 26
Load a chat app, type a message, and it shows up on someone else’s screen a fraction of a second later.
30 Days of JavaScript: Introduction to TypeScript, Day 25
You have spent 24 days writing JavaScript that runs first and complains later. A typo in a property name, a number
30 Days of JavaScript: Progressive Web Apps (PWAs), Day 24
You build a site, it works great, then someone opens it on a train that dives into a tunnel and the
30 Days of JavaScript: GraphQL and JavaScript, Day 23
You need a user’s name and email. The REST endpoint hands you back the whole user object: forty fields, three of
30 Days of JavaScript: JavaScript Design Patterns, Day 22
You’ve solved the same problem more than once. A global that everything reaches into and nobody owns. A settings object that
30 Days of JavaScript: Introduction to Node.js, Day 21
For 20 days you’ve written JavaScript that runs in a browser. Day 21 is where that changes. In our 30 Days
30 Days of JavaScript: Accessibility and JavaScript, Day 20
Tab through enough of the web and the cracks show fast. A menu that won’t open from the keyboard. A button
30 Days of JavaScript: JavaScript Animation Basics, Day 19
A page that snaps between states feels broken even when it works fine. Toggle a menu open instantly and people flinch.
30 Days of JavaScript: Introduction to Functional Programming, Day 18
Day 18. You’ve written a fair bit of JavaScript by now, and some of it has probably bitten you: a function
30 Days of JavaScript: Building a Simple Weather App, Day 17
You’ve spent sixteen days on syntax and logic. Today you point JavaScript at the real world and ask it what the
30 Days of JavaScript: Web Components and Custom Elements, Day 16
You’ve probably copied the same dropdown, the same modal, the same star-rating widget into three projects, then watched each copy drift
30 Days of JavaScript: Unit Testing in JavaScript, Day 15
You wrote the function. It works on your machine. Three weeks later someone refactors it, ships, and it quietly breaks in
30 Days of JavaScript: Object-Oriented JavaScript, Day 14
By now you’ve written a fair bit of JavaScript in this 30 Days of JavaScript series, and your files are probably
30 Days of JavaScript: JavaScript Libraries and Frameworks, Day 13
Nobody writes everything from scratch. The moment you need to manipulate the DOM, wrangle a date, or build a screen that
30 Days of JavaScript: Working with JSON, Day 12
You call an API, and back comes a wall of text. Before your code can do anything with it, that text
30 Days of JavaScript: Performance Optimization Techniques, Day 11
You’ve written code that works. Then you ship it, someone opens it on a mid-range phone, and it stutters. Closing that