import js in html
<script type="text/javascript" src="yourfile.js"></script>
include script in html
<script type="text/javascript" src="/path/to/script.js"></script>
html import script
<!--Import Script In HTML5--> <script type="text/javascript" src="script.js"></script>
import script html
<html> <head> <script type="text/javascript" src="/path/to/script.js"></script> ...