PJAX in Yii2 and field focus?

Question

Yii

Good day. Please help me overcome the problem. There is a code:

<?php echo Html::beginForm(); ?>
        <div class = "form-horizontal" role = "form" id = "form_message">

            <div class = "input-group">																				
                <?php echo Html::activeTextInput($form_model, 'message', ['class' => 'form-control', 'value'=>'', 'autofocus'=>true]); ?>
                <?php echo Html::activeHiddenInput($form_model, 'group_id', ['value'=>$group_model->group_id]); ?>
                <?php echo Html::activeHiddenInput($form_model, 'to_user', ['value'=>Yii::$app->user->id == $group_model->user_to ? $group_model->user_from : $group_model->user_to]); ?>
                <span class="input-group-btn">
                    <?php echo Html::submitButton('Отправить', ['class' => 'btn btn-default']); ?>
                </span>																																																																																						
            </div>
        </div>
        <?php echo Html::endForm(); ?>
        <?php echo Html::error($form_model, 'message'); ?>


<?php
        yii\widgets\Pjax::begin(['options' => ['id'=>123]]);
        echo ListView::widget([
            'dataProvider' => $dataProvider,
            'itemView' => '_message',
            'layout' => "{items}\n{pager}"
        ]);
        yii\widgets\Pjax::end();
        ?>

And

function updateMessage(){
        $.pjax.reload({container: '#123'});
    }

    $(document).ready(function(){
        setInterval(updateMessage, 3000);
    });

But the trouble is that I thought that PJAX only updates a certain piece, and everything else remains untouched, but the focus of the form is lost. Please tell me how to make the ListView updated, everything else remains untouched (including the focus of the form). After a successful update, I tried to focus using JS, but the trouble is that the site is also designed for a mobile phone, and I think the user will not really like the ever-appearing keyboard.

Answer 1

id=123 attribute cannot be set in HTML JS will not find this element use for example 'a123'
ps focusing after updating part of the page can be solved using events

$js=<<<JSCODE
$('#a123).on('pjax:complete', function() {
 // ваш код 
});
JSCODE;
?>
<?php $this->registerJS($js);