Question

I have an iframe in my html page from another website.

User does something in that iframe, and then the page closes itself. (that page isn’t for me, I can’t change the functionality of that)

I want my html page to detect this close command from child and then, change visiblity of the iframe to false.

How to do that??

Answer 1

Save the current location and use use setInterval to start the loop.

var startingLocation = document.getElementById('myIFrame').location;
setInterval("checkChildLocation",1000);
function checkChildLocation() {
  if(document.getElementById('myIFrame').location != startingLocation) {
    /* the iframe has changed */
  }
}

Or something like that.