You can kind of do that-- the defer attribute of the script tag behaves similarly to async in that the scripts can be downloaded without blocking, but they are

You can kind of do that-- the defer attribute of the script tag behaves similarly to async in that the scripts can be downloaded without blocking, but they are supposed execute in the order that they are included in the page (unlike async). http://stackoverflow.com/a/10731231/480033 http://stackoverflow.com/a/10731231/480033 However, browser implementation isn't consistent so there's no guarantees really.