how to change textbox input language in web application

Question

Im workin on a web application , and I have a form on which I have a textbox that users must fill it using arabic language.
how can I control it using javascript ?
Changing the default language of the operting system to arabic will solve my problem.
How can i change the default language to arabic using javascript ???
and is it the best approch to do it??
Is their another method ?

Answer 1

Refer to this question and it will solve your problem pal Arabic text box

EDIT: Change the code to this

$().ready(function () {
    $("input#NameTextBox").attr("lang", "fa");
});

Answer 2

a better solution may be:

Farsi type java script code