HTML <isindex> (Index Prompt) Tag

❮ Previous Reference Next ❯

Deprecated: Not Supported in HTML5.


<isindex action="cgi-bin/" prompt="Enter search terms">
<!-- very old HTML style syntax below -->
<base href="cgi-bin/search">
<isindex prompt="Enter search terms">
<isindex href="cgi-bin/search" prompt="Keywords:">


The <isindex> element specifies that a document has an associated searchable keyword index.

When a browser encounters this element, it inserts a query entry field at that point in the document. The viewer can enter query terms to perform a search.

This element is deprecated under the strict HTML and XHTML specifications and should not be used.


Version: HTML 2, 3.2, 4, 4.01 (transitional)

Standard Syntax


Browser Support



Attribute Value Description
action URL Specifies the URL of the query action to be executed when the viewer presses the ENTER key.
prompt keywords Allows a custom query prompt to be defined.

Global Attributes

<isindex> element also supports the Global Attributes in HTML.

Event Attributes

<isindex> element also supports the Event Attributes in HTML.

❮ Previous Reference Next ❯