Apply Functional Programming to Convert Strings to URL Slugs - original array mutated error

Apply Functional Programming to Convert Strings to URL Slugs - original array mutated error
0

#1

Hi,

Could you help me why my script does not pass?
I get the following error:

“The globalTitle variable should not change.”

I create a copy of the passed string with slice and using methods on that.

If I check and use console.log() then the original array not mutated.

Thanks

Your code so far


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

// Add your code below this line
function urlSlug(title) {

  return title.slice(0).trim().split(/\s+/g).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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/67.0.3396.99 Chrome/67.0.3396.99 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


#2

You are getting that message, because you accidentally change the global variable from:

var globalTitle = "Winter Is Coming";

to

var globalTitle = " Winter  Is Coming";

Remove that extra space at the beginning of the string and try running the tests again.


#3

Thank you,

I would not have found out the cause of this error.


#4

Thanks, I had this same problem. Seems a little silly that you can’t test out the other inputs without having to remember to change it back to the original.


#5

To test out other inputs, you could simply change the following line. You would put whatever string you want to test instead of globalTitle.

var winterComing = urlSlug(globalTitle);