who knows? maybe it's op grandma age?
https://stackoverflow.com/questions/47882/what-is-a-magic-number-and-why-is-it-bad

Instead of num probably I would use letter or numericChar or something like this.

Because 'a'.charCodeAt = 97 , b - 98, and so on

Only exclude numbers with the digit "5".
There is nothing said about 10. :-)
Look at the 2nd example in the description.

And you have also to exclude numbers like 51, 52, 53 and so on...

Hi,

This is what your code does:

it took out only the numbers with 5 at the end.

This is what it supposed to do:

return the count of all numbers except numbers with a 5 in it.

Example: 56 doesn't end with 5 but it contains 5.

Regards,

suic

And how could I help you?

Sorry, I just don't get, what I am I doing wrong

1175 people did this kata without any problems.

So maybe you should read it again.

Or tell me, what exactly do you not unterstand.

What a weird description ?
You've to describe game better and to make better tests. I don't get why I can't pass

It looks not productive and too sophisticated

unusable and confusing