how to link in javascript to html file code example
Example 1: import js in html
<script type="text/javascript" src="yourfile.js"></script>
Example 2: link javascript html
<script type="text/javascript" src="monscript.js"></script>
<script type="text/javascript" src="yourfile.js"></script>
<script type="text/javascript" src="monscript.js"></script>