Answers for "how to include an external js file in html"

Error: listen EADDRINUSE: address already in use :::3000

sudo lsof -i :3000

Error: listen EADDRINUSE: address already in use :::3000

//Run this command to get the PID of the running 
ps aux | grep node
//Then kill/stop it by 
kill -9 PID

Error: listen EADDRINUSE: address already in use :::3000

kill -9 {PID}

link javascript to html

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

how to link javascript to html

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