label returns a
DOMString containing a name describing the data channel. These labels are not required to be unique.
You may use the label as you wish; you could use it to identify all the channels that are being used for the same purpose, by giving them all the same namel. Or you could give each channel a unique label for tracking purposes. It's entirely up to the design decisions made when building your site or app.
A unique ID can be found in the
A data channel's label is set when the channel is created by calling
RTCPeerConnection.createDataChannel(). It cannot be changed after that.
var name = aDataChannel.label;
A string identifier assigned by the Web site or app when the data channel was created, as specified when
RTCPeerConnection.createDataChannel() was called to create the channel.
This sample creates a data channel on an
RTCPeerConnection, then, some time later, sets the content of a UI element to display the channel's name.
var pc = new RTCPeerConnection(); var dc = pc.createDataChannel("my channel"); /* ... */
document.getElementById("channel-name").innerHTML = "<span class='channelName'>" + dc.label + "</span>";
|WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'RTCDataChannel.label' in that specification.
|Candidate Recommendation||Initial specification.|
|Feature||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|