Switch

Switch statements are a way to compare a variable against multiple possible values. They are similar to if-else statements, but tend to be more readable when there are many potential options.

const os = "mac";
let creator;
switch (os) {
  case "linux":
    creator = "Linus Torvalds";
    break;
  case "windows":
    creator = "Bill Gates";
    break;
  case "mac":
    creator = "Steve";
    break;
  default:
    creator = "Unknown";
    break;
}

console.log(creator);
// Steve

Unlike some languages where fall-through doesn't happen by default, JavaScript will continue to execute the next case until it reaches a break or return statement.

99 times out of 100, you'll want to include a break/return statement after each case to prevent this behavior.