codewars #94 The Hashtag Generator (5kyu)

#94 The Hashtag Generator

The marketing team are spending way too much time typing in hashtags.

Let's help them with out own Hashtag Generator!

Here's the deal:

- If the final result is longer than 140 chars it must return false.

- If the input is a empty string it must return false.

- It must start with a hashtag (#).

- All words must have their first letter capitalized.

Example Input to Output:

" Hello there thanks for trying my Kata" => "#HelloThereThanksForTryingMyKata"

" Hello World " => "#HelloWorld"

function capitalize(str) {
    return str.charAt(0).toUpperCase() + str.slice(1);
}

function generateHashtag (str) {
  if(!str)
    return false
  const result = "#"+str.split(" ").map(word => capitalize(word).trim()).join("");
  if(result.length > 140)
    return false;
  return result;
}