How to change height of iframe based on dynamic conent within the iframe?

Question

I have an iframe that has dynamic content. If the answers specific questions, additional information displays (hidden div becomes visible). I\'d like the height of the iframe

Answer 1

Check this one. You can get the iframe size using javascript itself.
Using setInterval, check the window height each time.

< iframe src='' frameborder='0' scrolling='no' id='frame_id' style='overflow:hidden; width:984px;' >

Check this