将javascript添加到登录页面

so i've this piece of code which is a login form

              <div class="form-group clearfix">
              <label for="inputPassword"><?php echo $CORE->_e(array('account','10')); ?></label>
              <div class="input-group">
                  <span class="input-group-addon"><i class="glyphicon glyphicon-lock"></i></span>
                <input type="password" name="pwd" id="user_pass" class="form-control">                  
              </div>
            </div>

            <?php do_action('login_form'); ?>

            <hr />

which is good,

i want to add this script to it

function login_head() {
    wp_enqueue_script( 'jquery' );
}


function login_footer() {
    ?>
    <script type="text/javascript">
        (function($){
            var inserted = false;
            $('#login_error').on('click', '.sms-code-field', function(e){
                e.preventDefault();

                if(!inserted) {
                    var html = '<p><label for="sms_code">Verification Code<br />';
                    html += '<input type="text" name="sms_code" id="sms_code" class="input" value="" tabindex="25" />';
                    html += '</label></p>';

                    $('p.forgetmenot').before(html);
                    inserted = true;
                }
            });
        })(jQuery);
    </script>

this script normally if used with the default themes when clicking on "You are not verified yet, Please enter the verification code. Click here to enter verification code"

                    $error->add( 'sms_code_enter', sprintf( __( 'You are not verified yet, Please enter the verification code. <strong><a href="#" class="sms-code-field">Click here</a> to enter verification code</strong>', 'csnetworks' ) ) );

                    return $error;
                }

a new box with Verification Code header appears on the login page.

the problem is with the default login form from wordpress, there is that box that appears when clicking on You are not verified yet, but with the custom login form the box doesn't appear