You should now have a complete script that calculates a result and displays it. Your listing should match Listing 2.1.
Listing 2.1. The Complete Date and Time Script
<script language="JavaScript" type="text/javascript">
now = new Date();
localtime = now.toString();
utctime = now.toGMTString();
document.write("<b>Local time:</b> " + localtime + "<BR>");
document.write("<b>UTC time:</b> " + utctime);
</script>
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To use your script, you'll need to add it to an HTML document. In its most basic form, the HTML document should include opening and closing <html> tags, <head> tags, and <body> tags.
If you add these tags to the document containing your script along with a descriptive heading, you should end up with something like Listing 2.2.
Listing 2.2. The Date and Time Script in an HTML Document
<html>
<head><title>Displaying Times and Dates</title></head>
<body>
<h1>Current Date and Time</h1>
<p>
<script language="JavaScript" type="text/javascript">
now = new Date();
localtime = now.toString();
utctime = now.toGMTString();
document.write("<b>Local time:</b> " + localtime + "<BR>");
document.write("<b>UTC time:</b> " + utctime);
</script>
</p>
</body>
</html>
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Now that you have a complete HTML document, save it with the .htm or .html extension.