check if javascript is enabled in browser code example

Example 1: check if javascript is enabled

<!-- From https://www.enable-javascript.com/ -->
<noscript>
 For full functionality of this site it is necessary to enable JavaScript.
 Here are the <a href="https://www.enable-javascript.com/">
 instructions how to enable JavaScript in your web browser</a>.
</noscript>

Example 2: check if js is enabled

<script>
    document.write("Hello JavaScript!")       
</script>
<noscript>
    <style type="text/css">
        .pagecontainer {display:none;}
    </style>
    <div class="noscriptmsg">
    You don't have javascript enabled.  Good luck with that.
    </div>
</noscript>