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 April 2018.
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
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| HTML # dom-link-as |
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