Use the event name in methods likeaddEventListener(), or set an event handler property.

addEventListener("closing", (event) => { })onclosing = (event) => { }

A genericEvent.

While theclosing event is sent to the channel just before beginning to close the channel's data transport, theclose event is sent once the closing process is complete.

This example updates a connection status interface when theclosing event arrives.

First, an example usingaddEventListener():

dataChannel.addEventListener("closing", (ev) => {  myConnectionStatus.icon = closingIcon;  myConnectionStatus.text = "Connection closing";});

You can also set theonclosing event handler property directly:

pc.onclosing = (ev) => {  myConnectionStatus.icon = closingIcon;  myConnectionStatus.text = "Connection closing";};

• WebRTC API
• Signaling and video calling