Daily Software Tips & Tricks

Dealing with deeply nested objects in JavaScript used to mean writing long, ugly chains of if-statements or logical AND operators to avoid crashes. Now, we have optional chaining (using the ?. syntax). By adding a simple question mark before the dot, JavaScript will automatically return undefined if any part of the chain is missing instead of throwing a script-terminating error.

It keeps your code much cleaner and saves you from those annoying runtime crashes when an API response doesn't look exactly how you expected. It is a small syntax change that makes your codebase significantly more resilient.