Daily Software Tips & Tricks

If you're using JavaScript or TypeScript and setting default values with the standard OR operator (`||`), be careful. If the actual value is `0` or `false`, `||` will incorrectly treat it as 'falsy' and apply your default instead of preserving the valid value. Instead, switch to the Nullish Coalescing Operator (`??`). This operator *only* applies the default if the value is strictly `null` or `undefined`. It ensures that valid zero counts or boolean false values are preserved, making your logic much safer and less prone to subtle bugs.