add a js file to html code example
Example 1: import js in html
<script type="text/javascript" src="yourfile.js"></script>
Example 2: include script in html
<script type="text/javascript" src="/path/to/script.js"></script>
Example 3: link javascript html
<script type="text/javascript" src="monscript.js"></script>
Example 4: how to link js to html
<script src="Your-JavaScript-File.js"></script>
Example 5: include js in html
<html>
<head>
</head>
<body>
<script type="text/javascript" src=es4.js></script>
</body>
</html>
Example 6: how to link javascript to html
<script src = "index.js"></script>