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PresentationConnection.binaryType

When a PresentationConnection object is created, its binaryType IDL attribute MUST be set to the string "arraybuffer". Upon getting, the attribute MUST return its most recent value (the value it was last set as). Upon setting, the user agent MUST set the IDL attribute to the new value.

Note: The binaryType attribute allows authors to control how binary data is exposed to scripts. By setting the attribute to "blob", binary data is returned in Blob form; by setting it to "arraybuffer", it is returned in ArrayBuffer form. The attribute defaults to "arraybuffer". This attribute has no effect on data sent in a string form.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support ? ? 51
Disabled
51
Disabled
Disabled From version 51: this feature is behind the dom.presentation.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
 ? ? ?
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support ? ? ? 51
Disabled
51
Disabled
Disabled From version 51: this feature is behind the dom.presentation.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
 ? ? ?

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https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/binaryType