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

What helped me here is recent ResizeObserver spec polyfill:

const divEl = $('#section60');

const ro = new ResizeObserver(() => {
    if (divEl.is(':visible')) {
        console.log("it's visible now!");
    }
});
ro.observe(divEl[0]);

Note that it's crossbrowser and performant (no polling).