Board Thread:JS Development/@comment-9605025-20191203031357

First, I am adding MediaWiki:TimeanddateClock.js and would like to know if I need to make any changes for it to be in an acceptable state for this wiki.

Regardless, I would also appreciate it if someone could either explain or link to an explanation of the first two points listed under the JS conventions for this wiki. I currently do not understand what those do nor do I understand what is meant by the conditions listed for when to use them.

Thanks in advance. 