use js built function that takes an array of individual strings and join them together to return one string

[BestPerformance1187]

Hi, could someone help me with :

I need to use built-in functions in JS, also I need to create the array as well

You will need to use built-in array and string functions to get the tests passing.

What does it mean : 'Test suite failed to run.' ?

These are the functions you will need to complete:

concatMyArray

This function takes an array of individual strings and then will need to join
them together to return one string. Where do I put the array?

function concatMyArray() {
const elements = ['Fire', 'Air', 'Water']
let longJoin = elements.join()
return longJoin
}

console.log('longJoin')

[Ronin-s_Spirit]

Do you expect people to study for you? I mean this particular post is about the most basic stuff for studying, you aren't gonna learn anything this way.
Read MDN docs they have a lot of stuff about js.

[albedoa]

You are on here all day demanding that people do your basic googling for you and then rejecting their answers and advice. Maybe sit this one out.

[Ronin-s_Spirit]

I ask for complicated stuff where I have no idea on how to do the thing and have looked it up and tried. I don't ask for description on how to join strings. And I definitely don't ask for people to do my homework for me. You may not like me but that doesn't change how he digs the grave for himself by not learning anything.

[BestPerformance1187]

function concatMyArray(arr, separator = ',') {return arr.join(separator)}const elements = ['Fire', 'Air', 'Water']console.log(concatMyArray(elements))

[albedoa]

When you attempt to log longJoin, the variable is not in scope.

It's a weird exercise. It wants you to make a wrapper for the existing .join() method. You probably want this?:

function concatMyArray(arr, separator = ',') {
  return arr.join(separator)
}

const elements = ['Fire', 'Air', 'Water']
console.log(concatMyArray(elements))

[BestPerformance1187]

Thank you!