One drawback. ► execute <script> at bottom of file ► execute <script defer> Both do the same; they execute script after DOM was parsed. When your JS creates

One drawback. ► execute <script> at bottom of file ► execute <script defer> Both do the same; they execute script after DOM was parsed. When your JS creates GUI you now have to battle FOUCs. ► "import" loads your script async so it _could_ load before _all_ DOM has parsed... but 9999 out of 10000 scenarios it won't