JSFiddle - React, Tailwind, and code Playground

by Zikes

HTML

<textarea>Thıs ıs əxamplə</textarea>

JavaScript

var replace_map={
    "ı":"i",
    "ə":"e"
};

$('textarea').click(function(){
    this.value = this.value.replace(/./g,function(str){
        return replace_map[str] || str;
    })
});