Answers for "how to link an html file to a js file"

killing a port mac

sudo lsof -i :3000

import js in html

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

include script in html

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

how to link your js file to html

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

how to link js to html

<script src="Your-JavaScript-File.js"></script> <!--If JS file is in same folder with HTML file-->