2.2.2.19 HTMLIsIndexElement
Quirks Mode, IE7 Mode, IE8 Mode, IE9 Mode, IE10 Mode, and IE11 Mode (All Versions)
The HTMLIsIndexElement interface indicates that the document contains a searchable index.
The HTMLIsIndexElement interface has been extended with the following attribute:
To use the isIndex tag, the server must provide a search engine that supports this tag. The script to be executed on the server can be specified by the IHTMLIsIndexElement::action property on this tag.
The isIndex element can be used only within the head tag.
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//Introduced in Internet Explorer. interface HTMLIsIndexElement : HTMLElement { attribute DOMString action; };