Hm - specifically, that global variable would give me a different outcome between jsfiddle and codewars?
if you don't mind, could you explain how that would be the case?
Actually - nevermind - I have a feeling I am not able to explain exactly what I am noticing - and this isn't going to be helpful in the end. I really appreciate the input and help. Thank you.

Thank you so much - always helpful. I guess, though -- if you don't mind -- what I was wondering about is that I got such different outcomes from jsfiddle vs codewars.
I was surprised by that and wondered why.

I am certain my code is too complicated, so forgive me. I only started this journey a few weeks ago. I am learning.
Would it be okay to ask for suggestions on debugging? I have thought of every single edge case I can -- and I still average around 20 failed tests each time.
Again, I get one thing I am doing rather clunkily at this point is creating bloated code. For me, in these early stages of learning, separating out each step like this is the best I can do and actually helps me think through the problem...
So, that said -- I apologize for that.
The question I have is this:

1. What are the specific steps to take to be able to see the test cases - if this is possible?
2. What are some good resources for coming up with the edge cases that are stopping me from passing the tests?

Here is my code so far:
(I recently added in some if clauses to try to test to see if those elements were an issue...so that is why they are there...)
function tripledouble(num1, num2) {
var re = /^\d*(\d)\1{2}\d*$/g;
var myArray = num1.toString().split(re);
if (myArray === null) {
return 0;
} else {
var myStr = myArray.toString();
var res = myStr.replace(/[, ]+/g, " ").trim();
var res2 = res + res;
var re2 = new RegExp(res2, "gi");
var MyArray2 = num2.toString().match(re2);
if (MyArray2 === undefined) {
return 0;
}
if (MyArray2 === null) {
return 0;
}
if (MyArray2.length >= 0) {
return 1;
}
else {
return 0;
}
}
}
var num1 = 799900990;
var num2 = 990010000;
alert(tripledouble(num1, num2));

Oh I always do that. Thank you again. I only started learning a few weeks ago.

I don't want to read a response with a spoiler...but thank you.
I re-read the mdn page about reduce...
I then used the sort and reduce method to get rid of duplicates and got rid of the if statement...
I still have the same error.
Only for the smallest test case.

I very much understand that as I practice my code will hopefully get more elegant and less complicated. At this point I am very much simply enjoying the practice.

Thank you very much. Any insight is greatly appreciated.

Don't focus on the promise, please.
What I am curious about is how to resolve the one test that I am not passing.
Is using some sort of exception handling appropriate?
I get that using a promise is too much here.
Thank you.

Hi - I just attempted in js...this is only my second kata so I apologize if I am asking something obvious...
I passed sample tests...so submitted my solution.
I passed all but one test -- and I am a bit confused by the result and what I am supposed to do. I don't want to include any spoilers here...so basically, my question is simply...if I passed the sample tests...how/why would I get a failed test upon an attempt?
And for range.length?
I am happy to provide more info as necessary.