Question

I am attempting to query a db row every n seconds to see if a value has changed, then based that value I want to build a class that I can apply to a div in my page.

I can currently echo out the slide number, i have this

echo("The current slide number is: ".$currentSlideNbr);

but am not sure how to query every n seconds and then add .$currentSlideNbr to my class name with jquery

Thanks in advance

Answer 1

here’s a simple javascript example that will trigger every n second(s)

    var n = 1000; // 1 sec
    var interval = setInterval(function() {
        $.ajax({
            url: 'your url',
            method: 'get',
            success: function(data) {
                $("#someelement").addClass(data);
            }
        });
    }, n);

if you want to stop the process at any time you can do

clearInterval(interval);

not that data should only contain the classname you like to add. So not

echo("The current slide number is: ".$currentSlideNbr);

but

echo($currentSlideNbr);