Mirror encrypter

As described on Reddit: https://www.reddit.com/r/dailyprogrammer/comments/4m3ddb/20160601_challenge_269_intermediate_mirror/. Made by Emile Nijssen in ~1.5h.

{{axis.top.charAt(x-1)}}
{{axis.left.charAt(y-1)}}
{{axis.bottom.charAt(x-1)}}
{{axis.right.charAt(y-1)}}
\
/
uncryptedWord: {{uncryptedWord}}
encryptedWord: {{encryptedWord}}

Step delay: {{speed}}ms

Enter your word:

Hint: click a field to create or remove a mirror.