Bootstrap: Automatically add asterisk symbol to detected 'required' form input field

$('input').each(function(){
   if($(this).is('[required=required]')){
    if ($(this).is('[noAsterisk]')){
    return null;
   } else {
       $(this).closest(".YourClassName").children("label").append('<font style="color:red;position:absolute;" > *</font>');
   }
   }
});

* javascript above require jQuery
with the code:

if ($(this).is('[noAsterisk]')){
     return null;
}

allow you to add exception with 'noAsterisk', where you don't require asterisk as there had 'required' html tag appended.