判斷瀏覽器是否支持webrtc

 try {
      let testRTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection || window.RTCIceGatherer;
      if (testRTCPeerConnection) {
        let serverConfig = {
          "iceServers": [{
            urls: [
              "stun:stun.l.google.com:19302",
              "stun:stun1.l.google.com:19302",
              "stun:stun2.l.google.com:19302",
              "stun:stun.l.google.com:19302?transport=udp"
            ]
          }]
        };
        new RTCPeerConnection(serverConfig);
        return true;
      } else {
        throw "當前瀏覽器不支持該功能";
      }
    } catch (error) {
    console.error("當前瀏覽器不支持該功能")
      return false;
    }