Answers for "connect js script to html"

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

import js in html

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

how to link javascript to html

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

call js script in html

<script src="file1.js" type="text/javascript"></script> 
<script src="file2.js" type="text/javascript"></script>