Deprecated. Not in HTML5. Marks the document as searchable. The server on which the
document is located must have a search engine that supports this
searching. The browser displays a text entry field and a generic line
that says, "This is a searchable
index. Enter search keywords." The
isindex element is not part of the form
system and does not need to be contained within a
form element. This method is outdated; more
sophisticated searches can be handled with form elements.
This is an empty element. In HTML, the end tag is forbidden. In XHTML, the element must be closed with a trailing slash as just shown. Developers may include a space character before the slash for backward compatibility with older browsers.
<isindex prompt="Enter your search term">
isindex element is outdated.