Answers for "add external js"

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>

killing a port mac

kill -9 <PID>

include script in html

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

link javascript to html

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

script src tag in html

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

how to include external javascript in html

<script src="script.js">