Unicode encoding doesn't work, after enabling UTF-8

Question

I've been trying to make Unicode encoding work on my website, every time I post this symbol "" the result after submit is "?".

I am using this to enable UTF, and I am using cakephp framework.

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

Update: It only doesn't work on dynamic element posted via Javascript.