HTMLLinkElement: as property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The as property of the HTMLLinkElement interface returns a string representing the type of content to be preloaded by a link element.

The as property must have a value for link elements when rel="preload", or the resource will not be fetched. It may also be applied to link elements where rel="modulepreload", but if omitted, will default to script. The property should not be set for other types of link elements, such as rel="prefetch".

This property reflects the value of the as attribute of the <link> HTML element.

Value

A string with the following allowed values: "audio", "document", "embed", "fetch", "font", "image", "object", "script", "style", "track", "video", "worker".

Specifications

Specification
HTML
# dom-link-as

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
as

Legend

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Full support
Full support