ViewTube

Your JavaScript never touches the screen directly. So how does a React Native app actually work? Takeaway: JS runs on its own ...

In this lecture, we start building a Todo App in React Native as a practical project. In Part 1, we create a new React Native project ...

Every React Native interview starts in the same place: so, what is React Native, and why did you pick it? Takeaway: React Native ...

Server data and UI state are different beasts. And sometimes, declarative code just isn't enough. Takeaway: RTK Query if you're ...

The old bridge was React Native's biggest bottleneck. So the team rebuilt the foundations. Takeaway: New architecture = JSI ...

React Native interviews can feel confusing, because every company expects something different. Takeaway: Prepare in order ...

Every component is born, changes, and eventually dies. Knowing what to do at each moment prevents most memory leaks.

Neither a browser nor React Native can read JSX. So who turns it into something they can run? Takeaway: JSX is optional syntax ...

You write View and Text in JavaScript. A real Android or iOS view appears on screen. Takeaway: JSX → virtual tree → diff ...

Old React Native code is full of classes and this dot set state. Modern code is just functions and hooks. Takeaway: Classes use ...

A user takes a phone call in the middle of your video player. What should your app do, and how does it even know? Takeaway: ...

Where does component did mount go when there are no classes? And what exactly is that HTML looking code inside your ...

If you know React for the web, you already know half of React Native. The other half is what trips people up. Takeaway: Same ...

var, let, or const? It sounds basic, until the interviewer asks you what prints before the declaration line. Takeaway: Default to const, ...

Calling the camera from JavaScript used to mean packing a JSON message and waiting in a queue. Not anymore. Takeaway: JSI ...

Where a variable lives decides who can see it. Get scope wrong, and you get bugs that only show up in production. Takeaway: ...

Three dots and an arrow. Two tiny pieces of syntax that show up in almost every line of modern React Native code. Takeaway: ...

A function finishes running, yet its variable is still alive. That's not a bug. Takeaway: A closure keeps its outer variables alive; ...

Your whole app's logic runs inside a JavaScript engine. Pick the wrong one and startup gets slow. Takeaway: Hermes ...