HTML and CSS Reference
In-Depth Information
Figure 2.13
Example 2.5 output in a JavaScript-enabled browser.
The <
noscript
> Tag.
Modern browsers provide a set of tags called
<noscript></noscript>
that enable you to provide alternative information to browsers that are either unable to read
JavaScript or have it turned off. All JavaScript-enabled browsers recognize the
<noscript>
tag.
They will just ignore whatever is between
<noscript>
and
</noscript>
. Browsers that do not
support JavaScript do not recognize the
<noscript>
tags. They will ignore the tags but will
display whatever is in between them. See Example 2.6.
EXAMPLE
2.6
<html>
<head>
<title>Has JavaScript been turned off?</title>
</head>
<body bgColor="blue">
<font color="white">
<h3>
1
<script type="text/javascript" >
2
document.write("Your browser supports JavaScript!");
</script>
3
<noscript>
Please turn JavaScript on if you want to see this page!<br>
<em>
4
Firefox > Tools > Options > Content >
Enable JavaScript<br />
IE > Tools > Internet Options > Security >
Custom Level >Security Setting > Scripting >
Enable<br />
</em>
5
</noscript>
Continues
