Cakephp 3.6.14：如果表单不完整且用户离开页面，则出现确认消息

I am using cakephp-3.6.14 and I have this form:

<div class="customers form large-9 medium-8 columns content">
<?= $this->Form->create($customer) ?>
<fieldset>
    <legend><?= __('Edit Customer') ?></legend>
    <?php
        echo $this->Form->control('company');
        echo $this->Form->control('name');
        echo $this->Form->control('surname');
        echo $this->Form->control('tel');
        echo $this->Form->control('mob');
        echo $this->Form->control('email');
        echo $this->Form->control('customer_type_id', ['options' => $customerTypes, 'empty' => true]);
        echo $this->Form->control('business_type_id', ['options' => $businessTypes, 'empty' => true]);
        echo $this->Form->control('business_name');
        echo $this->Form->control('balance');
        echo $this->Form->control('birthday', ['empty' => true]);
        echo $this->Form->control('notes');
        echo $this->Form->control('user_assigned');
        echo $this->Form->control('created_by');
        echo $this->Form->control('created_date', ['empty' => true]);
        echo $this->Form->control('modified_by');
        echo $this->Form->control('modified_date', ['empty' => true]);
        echo $this->Form->control('Address');
    ?>
</fieldset>
<?= $this->Form->button(__('Submit')) ?>
<?= $this->Form->end() ?></br></br>

Is it possible to show a confirmation message like "Are you sure you want to leave this page?" if the user has started completing the form and accidentally (by clicking on a menu item) redirects to another page?

I want the confirmation message to be displayed only if the user has completed at least one field of the form. Which is not answered in this question

I ended up using this are-you-sure_plugin