how to link script file in html code example

Example 1: include script in html

<script type="text/javascript" src="/path/to/script.js"></script>

Example 2: script src tag in html

<script type="text/javascript" 
         src="file.js">  
</script>

Example 3: link javascript file to html

<script type="text/javascript" src="path-to-javascript-file.js"></script>