Manipulate IFrame in Javascript

Create a iframe and set the content directly:

var frame = document.createElement('iframe');
parentElement.appendChild(frame);
frame.contentDocument.write(result);

According to Dom level 2 HTML specification, contentDocument is a property of HTMLIFrameElement.

Following code may also work. However I have not found the contentWindow property in W3C DOM specification.

var frame = document.createElement('iframe');
parentElement.appendChild(frame);
frame.contentWindow.document.write(result);