Web/API/RTCSessionDescription/type

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The property RTCSessionDescription.type is a read-only value of type RTCSdpType which describes the description's type.

Syntax

var value = sessionDescription.type;
sessionDescription.type = value;

The possible values are defined by an enum of type RTCSdpType.

The allowed values are those of an enum of type RTCSdpType:

"offer", the description is the initial proposal in an offer/answer exchange.
"answer", the description is the definitive choice in an offer/answer exchange.
"pranswer", the description is a provisional answer and may be changed when the definitive choice will be given.
"rollback", the description rolls back to offer/answer state to the last stable state.

// The remote description has been set previously on pc, a RTCPeerconnection

alert(pc.remoteDescription.type);

Specification	Status	Comment
WebRTC 1.0: Real-time Communication Between BrowsersThe definition of 'RTCSessionDescription.type' in that specification.	Candidate Recommendation	Initial specification.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`type` Experimental'	Chrome Full support Yes	Edge Full support 15	Firefox Full support Yes Prefixed' Full support Yes Prefixed' Prefixed' Implemented with the vendor prefix: moz	IE No support No	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.
Requires a vendor prefix or different name for use.': Requires a vendor prefix or different name for use.