Is JavaScript enabled?

Question: If the user's browser cannot execute JavaScript code, can I display a warning for the user?

Answer: Yes, you can display a special warning for users of JavaScript-incapable browsers. Put your warning text between the tags <NOSCRIPT> and </NOSCRIPT>. Here's an example:

<NOSCRIPT>
<H3>This page uses JavaScript</H3> 
<ul>
<li>Please use Netscape Navigator 3+ or Internet Explorer 3+
<li>Make sure that JavaScript is enabled in your browser.
</ul>
</NOSCRIPT>

JavaScript-enabled browsers will ignore everything between <NOSCRIPT> and </NOSCRIPT>. Browsers that cannot execute JavaScript will display your message on the page.

NOTE: The <NOSCRIPT> tag is not supported by Netscape Navigator 2. Therefore, your message will be visible to Netscape 2 users even if JavaScript is enabled in their browser. Keep this in mind and choose a proper wording that won't mislead Netscape 2 users. (For example, the above message assumes that your script requires at least version 3 of the browser.)