link a script file to html code example
Example 1: include script in html
<script type="text/javascript" src="/path/to/script.js"></script>
Example 2: how to link your js file to html
<script src="index.js"></script>
Example 3: how to link javascript to html
<script src="PathToYourFile.js"> </script>
Example 4: include script in html
<script>
console.log('u are poo')
</script>