Question

I wonder if it’s possible to write a function that calls when an element is created (or visible)?

For example:
1. When you click a button a div with id “area” gets created with DOM.
2. When a div with the id “area” exist, run function “areaFunction”.

I have tried the code below, which doesn’t work.

var App = {

    init: function () {
        if ($("#area") == true) {
            areaFunction();
        });
    },
}

window.onload = Capsule.init;

Answer 1

try:

if($('#area').length > 0){
    areaFunction();
});