To get the most out of this tutorial, you should have a basic understanding of JavaScript, including ES6 features like classes and arrow functions. Familiarity with HTML and CSS will also be beneficial.
JavaScript allows you to create mobile apps that work on both iOS and Android platforms. Unlike traditional native app development, where you'd write separate codebases for each platform (Swift for iOS and Kotlin/Java for Android), JavaScript frameworks enable you to write one codebase that runs on both platforms.