From http://www.w3schools.com (Copyright Refsnes Data)

HTML <noscript> tag

Example

Use of the <noscript> tag:

<script type="text/javascript">
document.write("Hello World!")
</script>
<noscript>Your browser does not support JavaScript!</noscript>

Try it yourself!

Definition and Usage

The <noscript> tag is used to provide an alternate content for users that have disabled scripts in their browser or have a browser that doesn’t support client-side scripting.

The noscript element can contain all the elements that you can find inside the body element of a normal HTML page.

The content inside the noscript element will only be displayed if scripts are not supported, or are disabled in the user’s browser.

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The <noscript> tag is supported in all major browsers.

Differences Between HTML and XHTML

NONE

Standard Attributes

id, class, title, style, dir, lang, xml:lang

For a full description, go to Standard Attributes.

Event Attributes

NONE

From http://www.w3schools.com (Copyright Refsnes Data)