Iframe src caching issue on firefox

Question

I have an iframe element with a random scr attribute. When I do refresh the page every time, the iframe should load the page with different query parameters based on the src att

Answer 1

It's reported as a bug of firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=279048

one workaround is resetting the src of iframe: document.getElementById('iframe_id').src = 'target_url';

Still there will be two requests: the first request is wrong and cancelled immediately before the second request which is correct.