Filling an IFRAME with dynamic content from JavaScript

Question

I have an IFRAME that should be filled with content from JavaScript. Had the content be on the server all I had to do is:

    function onIFrameFill() {
              


        

Answer 1

Similar to Jeffry but using contentDocument instead.

let iframe = document.querySelector('iframe');
let doc = iframe.contentDocument;
doc.open();
doc.write('Hello world!');
doc.close();