how to link a javascript file to an html file code example
Example 1: import js in html
<script type="text/javascript" src="yourfile.js"></script>
Example 2: how to link your js file to html
<script src="index.js"></script>
Example 3: import script html
<html>
<head>
<script type="text/javascript" src="/path/to/script.js"></script>
...
Example 4: how to connect a javascript file to html
<script src="name.js">
//put in your javascript here
</script>