JavaScript is a fascinating language, beloved for its versatility in building modern web applications. But have you ever wondered what happens when you write JavaScript code? How does it go from plain text in your editor to something the machine understands and executes? Let’s dive into this process, breaking it into manageable steps, and understand concepts like the AST, interpreter, compiler, and JIT (Just-in-Time) optimization

In JavaScript, data often needs to be converted from one type to another—such as from a string to a number or from a boolean to a string. This process is called type coercion, and it can happen in two main ways: implicit and explicit coercion. While JavaScript tries to make things convenient with automatic type conversions, these can sometimes lead to unexpected behavior if you’re not careful. In this blog, we’ll explore implicit and explicit coercion in JavaScript, look at examples, and discuss when each approach is best suited.