HTML <isindex> tag is used to provide a single line text input in a page to query a document. If user sent input to the server then server returns the list of page matching with the query.
The <isindex> tag can be used anywhere in the document, but it would be preferable to use it within <head> tag.
Note: Do not use <isindex> tag as it is not supported by HTML5, instead of it you can use form <input> which will do the same work.
Syntax
<isindex prompt = "Search your document here" /> Following are some specifications about the HTML <isindex> tag
| Display | None |
| Start tag/End tag | Only Start tag (End tag forbidden) |
| An element of | Document Structure |
Example
<!DOCTYPE html>
<html>
<head>
<isindex prompt = "Search your document here" />
</head>
</html>Attribute
Tag-specific Attribute
| Attribute | Value | Description |
|---|---|---|
| prompt | hint-text | It adds value as a label for the search text field. |
| action | URL | It is used to send the query to different URL instead of current document. |
Global Attribute
HTML <isindex> tag supports the Global Attributes.
Event attribute
HTML <isindex> tag supports the Event Attributes.
Supporting Browsers
| Element |  Chrome |  IE |  Firefox |  Opera |  Safari |
| <isindex> | No | No | No | No | No |
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