senior looking at bad code

Refactoring Conditionals in JavaScript

Recently, I’ve been refactoring a lot of code at the company where I currently work. One of the most common issues I’ve encountered is deeply nested if/else/else if statements. They tend to grow like a large, tangled tree. The problem is that these structures are hard to read, difficult to reason about, and often include duplicate checks if not managed carefully. In this tutorial, I’ll show you a few practical ways to refactor this kind of code and make it more readable and maintainable. ...

September 14, 2025 · Arnošt Havelka