Answers for "how to include js 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>

stop port 3000 mac

sudo lsof -i :3000
kill -9 PID

kill port npm

npx kill-port 3000

killing a port mac

sudo lsof -i :3000

killing a port mac

kill -9 <PID>

import js in html

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

linking a script .js

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

include js to js

var imported = document.createElement('script');
imported.src = '/path/to/imported/script';
document.head.appendChild(imported);

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>");