Tell us what’s happening:
my code is not passing the test. Error saying that "globalTitle should not change

Your code so far

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

// Add your code below this line
function urlSlug(title) {
let arr = ""
return arr.concat(title).split(" ").filter(user => user.trim()).join("-").toLowerCase();
// 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) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36.

Challenge: Apply Functional Programming to Convert Strings to URL Slugs

Link to the challenge:

you changed this line, that’s why you get that error

but changing of the line shouldn’t be throwing such error. I thought any string can be passed to the globalTitle.

you can pass any string as function argument

but you changed stuff above this line: // Add your code below this line

you can test other strings passing them as function arguments urlSlug("A random string with which you can try");