Can you give an example on how you would try to do this?Gumboots wrote: ↑Thu Nov 14, 2019 9:40 pmJust wondering if anyone has messed around with deferred loading of external javascript files in phpBB?
By this I don't mean sticking the tags at the end of the body tag (as per default) but putting the tags in the head and using the defer attribute on them. This seems to have some performance advantages (loading of js files becomes non-blocking, giving faster times to domInteractive) but like anything may have some pitfalls for dependencies, etc.
Has any adventurous soul tried it?
Code: Select all
<script src="{T_JQUERY_LINK}"></script>
...a bit more stuff...
</body>Code: Select all
<head>
...meta tags, etc...
<script src="{T_JQUERY_LINK}" defer></script>If the script is hosted locally would you want to do this or not?Gumboots wrote: ↑Sat Nov 16, 2019 8:14 pmSure. An obvious one would be jQuery, as that's the biggest js file. Instead of the default, which is basically:
You'd be using:Code: Select all
<script src="{T_JQUERY_LINK}"></script> ...a bit more stuff... </body>
That's the gist of it. What it allows is for js files to not block rendering, and not block downloading of other files. Any script tag that has an external src and is set to defer will download independent of whatever else is going on, then will execute on domInteractive instead of executing as soon as it is downloaded. There a decent explanation here: https://flaviocopes.com/javascript-async-defer/Code: Select all
<head> ...meta tags, etc... <script src="{T_JQUERY_LINK}" defer></script>
