Question

I’ve got a DIV #alerts_wrapper on my page that is being refreshed every 5 seconds like this:

refresh_alerts = setInterval(function () {
    $('#leftside div#alerts_wrapper').load('staffhome.php #alerts_container' );
}, 5000); 

I’ve got a max-height on the div set to 200px, and scrolling to auto. How can I stop the div from refreshing if the user if scrolling on this div? And then if the user stops scrolling, start refreshing again??

Thanks!

Answer 1

Edit: Updated with new code, no need for polling just set/reset the flag when u scroll.

DEMO

var isScrolling = false;
$(function() {

    $('#scrollingDiv').on('scroll', function() {
        isScrolling = true;
    });

    refreshTimer = setInterval(refreshContent, 5000);

    function refreshContent() {
        if (!isScrolling) {
            $('#scrollingDiv').prepend('Latest Content <br />');//test code
            //$('#leftside div#alerts_wrapper').load('staffhome.php #alerts_container');            
        }
        isScrolling = false;
    }

});

———- Old post ———-

A simple polling on div scroll event will do the trick. See DEMO

var isScrolling = false;
var refreshTimer = null;
$(function() {

    $('#scrollingDiv').on('scroll', function() {
        isScrolling = true;
        if (refreshTimer != null) {
            clearInterval(refreshTimer);
            refreshTimer = null;
        }
    });

    //polling to see if still scrolling
    var pollScrolling = setInterval(function() {
        isScrolling = false;

        if (refreshTimer == null) {
            refreshTimer = setInterval(refreshContent, 5000);
        }    
    }, 500);

    //initialize timer
    refreshTimer = setInterval(refreshContent, 5000);

    function refreshContent() {
        if (!isScrolling) {
            $('#scrollingDiv').prepend('Latest Content <br />');
            //$('#leftside div#alerts_wrapper').load('staffhome.php #alerts_container');            
        }
    }

});