how to add validation before submit payment? - prestashop 1.7

Below is payment hook :

public function hookPaymentOptions($params)
    {
        if (!$this->active) {
            return;
        }

        $newOption = new PaymentOption();
    $paymentForm = $this->fetch('module:'.$this->name.'/views/templates/hook/payment.tpl');
    $newOption->setCallToActionText($this->trans(' PAY ', array(), 'Modules.MyModule.Shop'))
        ->setModuleName($this->name) /* must add*/
        ->setForm($paymentForm)        
        ->setAdditionalInformation($paymentForm)
        ->setAction($this->context->link->getModuleLink($this->name, 'xyz',array("confirmation"=>"1"), true));
    return [$newOption];        
    }

Validation Process add in js or tpl file

Validation Process add in js or tpl file

<script type="text/javascript">
$( document ).ready(function() {    

    $('#payment-confirmation > .ps-shown-by-js > button').click(function(e) {

    var myPaymentMethodSelected = $('.payment-options').find("input[data-module-name='xyz']").is(':checked');
     
    if (myPaymentMethodSelected)
    {
        //Validation Process
    }
     
});

});
</script>