How to embed a Qualtrics survey on my website?

EthanDong - Qualtrics site intercept is recommended for better management of surveys in different sections of website.
You can still use iframe and pass message to parent from survey(child) itself.
In survey(child) we can have this javascript on the last screen. This will pass the message to parent website.
Qualtrics.SurveyEngine.addOnReady(function()
{
/*Place your JavaScript here to run when the page is fully displayed*/
jQuery('#NextButton').click(function(){

window.parent.postMessage({'sender': 'Next_pressed', 'msg': 'hey next button is pressed loaded'}, "*");
});
});

In website you can have a receiver to act-on.
window.addEventListener('message', function _data_handler(event) {
   if (event.data.sender == 'Next_pressed') {
//do needful here
    console.log('Main window:', event.data.msg)
   }
   else
    console.log('Some other message')
  });

This may not work with preview link(test link) as it already have two iframes for mobile view.