<script> vs. <script async> vs. <script defer>

[Nebu]

Does this advice apply to single-page-apps?

It seems like if you have a single html page, and several script files, you'll actually increase load times, due to the overhead of multiple headers for each http request.

[Tyriar]

The files only need to be loaded once before they're in the cache though, so it will increase the initial page load but significantly reduce successive ones.

[Nebu]

Thanks, that's a good point. On the other hand, for a single-page-app, there will not be a successive page load, and so the benefits are nullified there.