Tip 17: Shorten Conditionals with Falsy Values
Explore how to shorten JavaScript conditionals by understanding falsy and truthy values. Learn when to use these values to simplify your code while avoiding common pitfalls like unintended mutations and strict equivalency checks. This lesson helps you write more readable and efficient conditional logic.
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Conditionals
Can you remember the first line of code you ever wrote? I can’t, but I wouldn’t be surprised if it was some sort of conditional. Responding one way to some information and a different way to other information is about as basic as programming can get.
I still write a lot of conditionals every day, and I bet you do, too. Fortunately, JavaScript, along with many other languages, gives you many tools for checking information and reassigning or standardizing information very quickly with minimal code.
The secret to being able to check values quickly is to understand the subtle
difference between the primitive values true and false (also called Boolean types)and the many so-called truthy and falsy values—values that aren’t identical
to the Boolean values true or false but act like they are in most cases.
Equivalency & identity
Give me a moment to review another concept: equivalency and identity—a ...