Apply Functional Programming to Convert Strings to URL Slugs prb

Tell us what’s happening:

I can’t find the problem in my code. Someone, please help me out.

Your code so far


// the global variable
var globalTitle = "Winter Is Coming";

// Add your code below this line
function urlSlug(title) {
  let original= title.toLowerCase();
  let word = original.split(" ");
  let result =word.join("-");
  return result;
  
}
// Add your code above this line

var winterComing = urlSlug(globalTitle); // Should be "winter-is-coming"

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/apply-functional-programming-to-convert-strings-to-url-slugs

so what kind of coding should i use?