XHTML Scripts

Scripts make it possible to process data and perform other dynamic events. Scripts are included in web pages thanks to the <script> element, which also identifies the specific scripting language being used (JavaScript, VBScript, and so on.).

<noscript>…</noscript>

Usage	Provides alternative content for browsers unable to execute a script.
Start/End Tag	Required/Required.
Attributes	core, i18n, events.
Empty	No.

<script>…</script>

Usage	The <script> element contains client-side scripts that are executed by the browser.
Start/End Tag	Required/Required.
Attributes	type="scripttype" Script language Internet content type. src="scripturl" The URL for the external script. defer="defer" Indicates that the script doesn't alter document content.
Empty	No.
Notes	You can set the default scripting language in the <meta /> element.