Read again my first reply, you're still doing that wrong.

Read this: https://docs.codewars.com/training/troubleshooting

To decide what to do with a letter in the string, you need to check its index in the string. Your if condition is wrong and it's not related with what the problem asks. Your code also isn't doing this:

with the alphabetical position ("a" = 1, "b" = 2, etc.) of each odd indexed character to get the string's total.

Start small, do one thing right at a time, and then add more code.

You're using the charCode now, not the index.

Your alphabet isn't right and you're not doing this:

You must add up the character ASCII code of each even indexed (assume a 0 based indexing) character in the string.

You're baseing the index in the alphabet, not in the string.