Answers for "how to include javascript file"

kill all server 5000 mac

#First run this, to get port information (with the port you want to kill)
sudo lsof -i :3000 

#Then run this, with <PID> replaced by the value in the column returned by previous command.
kill -9 <PID>

include script in html

<script type="text/javascript" src="/path/to/script.js"></script>

how to link javascript to html

<script src="PathToYourFile.js"> </script>

include other js files in a js file

document.writeln("<script type='text/javascript' src='Script1.js'></script>");
document.writeln("<script type='text/javascript' src='Script2.js'></script>");