Why it's returning global Title should not be changed

Tell us what’s happening:

Your code so far

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

// Add your code below this line
function urlSlug(title) {
  let str = title;
  return str.trim().split(/\s+/).map((e) => e.toLowerCase()).join('-');
// Add your code above this line

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

Link to the challenge:

Because you changed this text and added more spaces.

Reset your code, don’t touch this line and try again.

thanks @shimphillip for help. i’m trying it with different cases.