Check the length of the shank on the presser foot. Janome are short shank at 1 1/4". Older Kenmores were the long shank at 1 3/4". I don't know about newer ones. Stand the two presser feet side by side and you'll see if they match.
I have a several short shank machines, one slant needle and one long shank, so I'm covered. The ELna isn't as accepting of different brand feet as the other machines are. Most short shank attachments, except for a Bernina, are universal.