How to use typeof and switch cases in Javascript

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!

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";
  }
}

This is the code that will work. I’m going through the codeacademy.com coures also. The issue was with typeOf having mixed casing. It’s case sensitive and should be all lowercase: typeof

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

This is the code the will work for you:

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

typeof returns a string so you should encase your switch cases between single quotes.


function detectType(value) {
  switch (typeof value) {
    case 'string': // string should me 'string'
      return "string";
    case 'number':
      return "number";
    default:
      return "other";
  }
}

😉

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