How to call crm form Bitrix 24 when closing the site?

Question

CRM

In Bitrix24 out of the box there are several scripts for launching the form code below
on the page

<script id="bx24_form_inline" data-skip-moving="true">
        (function(w,d,u,b){w['Bitrix24FormObject']=b;w[b] = w[b] || function(){arguments[0].ref=u;
                (w[b].forms=w[b].forms||[]).push(arguments[0])};
                if(w[b]['forms']) return;
                var s=d.createElement('script');s.async=1;s.src=u+'?'+(1*new Date());
                var h=d.getElementsByTagName('script')[0];h.parentNode.insertBefore(s,h);
        })(window,document,'https://missp.bitrix24.ru/bitrix/js/crm/form_loader.js','b24form');

        b24form({"id":"2","lang":"ru","sec":"ehiv9q","type":"inline"});
</script>

Click on a button or link

<script id="bx24_form_button" data-skip-moving="true">
        (function(w,d,u,b){w['Bitrix24FormObject']=b;w[b] = w[b] || function(){arguments[0].ref=u;
                (w[b].forms=w[b].forms||[]).push(arguments[0])};
                if(w[b]['forms']) return;
                var s=d.createElement('script');s.async=1;s.src=u+'?'+(1*new Date());
                var h=d.getElementsByTagName('script')[0];h.parentNode.insertBefore(s,h);
        })(window,document,'https://missp.bitrix24.ru/bitrix/js/crm/form_loader.js','b24form');

        b24form({"id":"2","lang":"ru","sec":"ehiv9q","type":"button","click":""});
</script><button class="b24-web-form-popup-btn-2">Мы перезвоним вам</button>

Popup window - auto show:

<script id="bx24_form_delay" data-skip-moving="true">
        (function(w,d,u,b){w['Bitrix24FormObject']=b;w[b] = w[b] || function(){arguments[0].ref=u;
                (w[b].forms=w[b].forms||[]).push(arguments[0])};
                if(w[b]['forms']) return;
                var s=d.createElement('script');s.async=1;s.src=u+'?'+(1*new Date());
                var h=d.getElementsByTagName('script')[0];h.parentNode.insertBefore(s,h);
        })(window,document,'https://missp.bitrix24.ru/bitrix/js/crm/form_loader.js','b24form');

        b24form({"id":"2","lang":"ru","sec":"ehiv9q","type":"delay","delay":5});
</script>

But there is no call script when the site is closed, maybe someone has already implemented it or knows how to do it?

Answer 1

This is the only option that comes to my mind

window.onbeforeunload = function() {
               b24form({"id":"2","lang":"ru","sec":"ehiv9q","type":"delay","delay":5});
          return true;
};