As engineers, our everyday code is packed with multiple conditionals or switch statements. In many cases, it might be unreusable, hard to maintain, and it won't include extensibility. You might scratch your head while thinking how to write multiple conditionals and switch statements in a maintainable and a clean way that allow you and your mates to pick it up later in the process. How many times did you catch yourself while coming back to your old code that it is not maintainable and you can't find yourself in this anymore? The art of writing essential sections of your code, covered by conditionals is not quickly achievable. It requires practice, knowledge of advanced and reusable JavaScript patterns and ideas at this very moment. In this talk, I want to walk you through highly reusable and sophisticated approaches, when applied, they provide organised structure and a clear path to add more and more core conditionals.