How to use typeof and switch cases in Javascript

Question

I'm having problems finding out what's wrong with the code below. I have consulted how to use typeof and switch cases, but I'm lost at this point. Thanks in advance for your advices.

// Write a function that uses switch statements on the
// type of value. If it is a string, return 'str'. If it
// is a number, return 'num'. If it is an object, return
// 'obj'. If it is anything else, return 'other'.
function detectType(value) {
  switch (typeof value) {
    case string:
      return "str";
    case number:
      return "num";
    default:
      return "other";
  }
}

------------- Update -----------------------------------

Turns out the problem comes from my mistake (or rather oversight) of not following the instructions properly. Thanks again for your help and comments!

Answer 1

typeof returns a string, so it should be

function detectType(value) {
  switch (typeof value) {
    case 'string':
      return "str";
    case 'number':
      return "num";
    default:
      return "other";
  }
}