Refresh page when user is missing and there are no videos on page

Question

I need to refresh my website page when the user is inactive for 15 minutes and there are no embedded videos in it.

if the user is inactive on a page of the site for 15 minutes the page should be updated, but cannot update if the page has some embedded youtube video.

Whenever there is an embedded video it will use this code:

<iframe width="1280" height="720" src="https://www.youtube.com/embed/*VIDEOID*" frameborder="0" allowfullscreen></iframe>

Answer 1

Only with php/html you can’t do this, but here’s an example of doing with javascript/jquery:

<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script>
var idleTime = 0;
$(document).ready(function () {
    //Increment the idle time counter every minute.
    if($('iframe').length < 1) // caso não exista iframe vamos incrementar o contador (idleTime) de 1 em 1 minuto
        var idleInterval = setInterval(timerIncrement, 60000); // 1 minutos

    // resetamos o contador caso sejam detetados estes eventos
    $(this).mousemove(function (e) {
        idleTime = 0;
    });
    $(this).keypress(function (e) {
        idleTime = 0;
    });
    $(window).on('scroll', function (e) {
        idleTime = 0;
    });
});

function timerIncrement() {
    idleTime = idleTime + 1;
    if (idleTime > 14) { // 15 minutes
        window.location.reload();
    }
}
</script>

Broken example from here

If there was no need to detect any activity on the page would suffice on head of your html:

<meta http-equiv="refresh" content="900">

Where content is the number of seconds before refresh