Why do Arabic characters behave as separate characters when styling single Arabic character?

Question

Basically what I am trying to accomplish is Arabic characters misuse highlighter !

To make it easy for understand I will try to explain a similar functionality but f

Answer 1

You should take care of Beginning , Middle, End and Isolated characters. The complete list is available here

Use ufe94 instead of u0629

arabicWord.value.replace(/\u0647/,''+ unescape("%ufe94")+'')+