This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The RTCDataChannel.onopen
property is an EventHandler
which specifies a function to be called when the open
event is fired; this is a simple Event
which is sent when the data channel's underlying data transport—the link over which the RTCDataChannel
's messages flow—is established or re-established.
Syntax
RTCDataChannel.onopen = function;
Value
A function which the browser will call to handle the open
event. The function receives as its only input parameter the event itself, of type Event
.
Example
This example adds a new data channel to an existing RTCPeerConnection
, myPeerConnection
. It then establishes an open
event handler which updates some user interface elements to prepare them for being used to send messages over the data channel.
let dc = myPeerConnection.createDataChannel("Message Channel"); dc.onopen = function(event) { let messageBox = document.getElementById("messageBox"); let sendButton = document.getElementById("sendButton"); messageBox.disabled = false; messageBox.focus(); sendButton.disabled = false; }
Specifications
Specification | Status | Comment |
---|---|---|
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCDataChannel.onopen' in that specification. |
Candidate Recommendation | Initial specification. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
onopen | Chrome Full support 56 | Edge Full support ≤79 | Firefox Full support Yes | IE No support No | Opera Full support 43 | Safari Full support Yes | WebView Android Full support 56 | Chrome Android Full support 56 | Firefox Android Full support Yes | Opera Android Full support 43 | Safari iOS Full support Yes | Samsung Internet Android Full support 6.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.