I think this challenge have a bug.

Challenge Return Early Pattern for Functions has an issue. User Agent is: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.80 Safari/537.36 Core/1.47.933.400 QQBrowser/9.4.8699.400. Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:

// Setup
function abTest(a, b) {
  // Only change code below this line
  if(a<0||b<0)
    {
      return typeof(c);
    }


  // Only change code above this line

  return Math.round(Math.pow(Math.sqrt(a) + Math.sqrt(b), 2));
}

// Change values below to test your code
abTest(2,-2);

The Console return “undefined”, but this challenge submit fail.

[ooade]

@JamsonKwok It returns “undefined” not undefined. Your if statement should just return undefined not the typeof of some undefined variable which will result in a stringified undefined 😄

Don’t forget a typeof(typeof(undefined)) is a string.

There’s nothing wrong with the challenge, you can close it.

[dhcodes]

@marhyorh good catch! @JamsonKwok as @marhyorh has said, the test requires that the return be the key word undefined.