Trying to solve the final project in Javascript

Question

Hi there
I want to solve the final project in Javascript but it doesn't work.
My code:

class Add {
constructor(...words) {
this.words = words;
}
//your code goes here
}
print(){
var y = "";
for (x of this.words){
if(x = ","){
x = "";
}
else {
y += "

Answer 1

I think this will you help:

https://code.sololearn.com/Wq22hJlSe5jr/?ref=app

Answer 2

Thank you, but it didn't work!