Little help/remainder: importing an external JavaScript file into index.html

If your imported external JavaScript code seems to not working, even though you used
script src="code.js">, you may forget about adding the 'async'. You may add this attribute into your index.html like that:

::: spoiler spoiler <script src="code.js" async> :::

it may seem irrelevant, but sometimes little things like that may help :)