JavaScript is the programming language used to build WebRTC applications in web browsers.
The entire WebRTC API surface is exposed through JavaScript:
- PeerConnection (RTCPeerConnection) for establishing connections
- getUserMedia for camera/microphone access
- Data Channel (RTCDataChannel) for peer-to-peer data
- getStats for monitoring session quality
JavaScript and WebRTC development
WebRTC applications are typically built using JavaScript frameworks (React, Vue, Angular) as SPAs. The signaling layer is also written in JavaScript, often using Node.js on the server side with WebSocket for real-time communication.
While the WebRTC APIs are JavaScript, the actual media processing (encoding, decoding, AEC, AGC) runs in native C++ code within libWebRTC. JavaScript orchestrates the session while native code handles the performance-critical media pipeline.
