jQuery event to trigger action when a div is made visible

Question

I\'m using jQuery in my site and I would like to trigger certain actions when a certain div is made visible.

Is it possible to attach some sort of \"isvisible\" even

Answer 1

redsquare's solution is the right answer.

But as an IN-THEORY solution you can write a function which is selecting the elements classed by .visibilityCheck (not all visible elements) and check their visibility property value; if true then do something.

Afterward, the function should be performed periodically using the setInterval() function. You can stop the timer using the clearInterval() upon successful call-out.

Here's an example:

function foo() {
    $('.visibilityCheck').each(function() {
        if ($(this).is(':visible')){
            // do something
        }
    });
}

window.setInterval(foo, 100);

You can also perform some performance improvements on it, however, the solution is basically absurd to be used in action. So...