invoke my jquery function on a webpage opened in iframe

Question

I want to click a button which is on webpage opened in iframe based on class selector from my parent page.

I tried this:

$.each($('.classname'), function(i, el){
  setTimeout(function(){
  $(el).trigger('click');
  },30000 + ( i * 30000 ));
});

but no success. How can i achieve this?

Answer 1

If the src of the iframe is pointing to a different domain, due to security reasons, you will not be able to access the contents of the iframe in javascript.