Boo Who - alternative solutions?

#1

The only solution I could think of involved comparing the property of the Object class to a string. It is a concise and in my opinion good solution, but it isn’t doable with the knowledge from FCC alone. Does anyone have a solution that uses only functions covered by FCC?

My solution as follows:

function booWho(bool) {
  // What is the new fad diet for ghost developers? The Boolean.
  var myType = Object.prototype.toString.call(bool);
  console.log(myType);
  if(myType === "[object Boolean]") {
    return true;
  }
  return false;
}
#2

My solution was remarkably simple for this one.
Using only typeof.

[details=Summary]

function booWho(bool) {
  // What is the new fad diet for ghost developers? The Boolean.
  
  if ( typeof bool === "boolean" ) {
    return true;
  }
  
  else return false;
}

booWho(false);

This text will be hidden[/details]

1 Like
#3

The solution that came to my mind is

function booWho(bool) {
    return typeof bool === "boolean";
}

… but I’m not sure that operator has been covered by the time you reach booWho. The challenge links to the boolean object, which can be used in a fairly clever way:

function booWho(bool) {
    return Boolean(bool) === bool;  // bool will only equal itself if it's a boolean
}

So, the answer to your question is yes, but it could be tough to pick up. I’m not sure what has been learned at this point in the course since I haven’t done these exercises in over a year, and none of it was my first exposure to JS.

1 Like
#4

I did something very basic to pass the challenge:

[SPOILER]

function booWho(bool) {
  return bool===true || bool===false;
}

[/SPOILER]

2 Likes
#5

Thanks everybody, it’s always great to see different ways to solve a puzzle! Still trying to train my brain to do things the Javascript way (my brain prefers the Java way).

#6

Hi everyone,
Here’s what I’ve got to solve mine:

[code]function booWho(bool) {
// What is the new fad diet for ghost developers? The Boolean.
return typeof bool === ‘boolean’ ? true : false;
}

booWho(null);[/code]

1 Like
#7

i had the same solution :grinning: :handshake:

#8