Bootbox input lost focus on alt key

Question

I'm currently trying to make a user settings page. On this page, the user can change his email by pressing a button that open a popup. On this popup, he should be able to type his new email. The problem is, when I press the Alt key, I lose the focus of the input. So... I can't type any email address because I can't add an "@" (Yes, I'm French and I have an AZERTY keyboard :/).

My question is : what can I do to not lose the focus ?

I develop my web app in Meteor and Jade. Here is my popup template :

template(name="change_mail")
  table.table.table-responsive.large-table
    tbody
      tr
        td {{_ "current_mail" }} :
        td.table-text#old-mail
      tr
        td {{_ "new_mail" }} :
        td
          input.black#new-mail(type="text" name="mail")

And my controller :

Template.change_mail.rendered = function ()
{
  document.getElementById('new-mail').focus(); // Don't work 
}

"click #change_mail": function (event, template)
{
    event.preventDefault();
    var user = Meteor.user();
    bootbox.dialog(
    {
        title : t('change_mail'),
        message : "<div id='dialogNode'></div>",
        className : "info-popup",
        buttons : 
        {
            cancel :
            {
                label : t('back'),
                className : "btn-default btn-lg"
            },
            success : 
            {
                label : t('update'),
                className : "btn-info btn-lg",
                callback : function ()
                {
                    var mail = $("#new-mail").val();
                    if (mail === "")
                    {
                        return;
                    }
                    else
                    {
                        Meteor.call('updateMail', user._id, mail);
                        displayPopup(t("success"), t("success_change_mail"), t("ok"), "btn-success btn-lg", "success-popup");
                    }
                }
            }
        }
    });
    Blaze.render(Template.change_mail, $("#dialogNode")[0]);
    $("#old-mail").text(user.emails[0].address);
},

EDIT : I tried to change the library, using Magnific Popup. I get focus when the popup is open but I lost it immediately. Anyway, I lost focus on both when I press Alt key. I don't understand why.

Answer 1

It's because you are using Ubuntu. On ubuntu the alt key is a system key that is binded to "type you command".

Reference: https://github.com/Guake/guake/issues/352

So if your customers are not using ubuntu + Azerty keyboard, it's fine.

As a dirty fix, you can catch an event when a key is pressed and if this key is alt, just force the focus with

document.getElementById('email').focus();