Where is javascript included?

Question

Playing around with javascript in the code playground i figured that the javascript file is included in the head of the html file. That creates some errors. Is it a bug, or are we supposed to use the script tag to avoid this problem?

Answer 1

https://code.sololearn.com/W5osYYOacWxp/?ref=app

Answer 2

oh, so this is ok. Thanks for the window.onload suggestion :)