how to link external javascript file to html page 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: script src tag in html
<script type="text/javascript"
src="file.js">
</script>
Example 4: how to link javascript to html
<script src = "index.js"></script>
Example 5: how to add javascript in html
<script src="script.js"></script>