const getUserIP= (onNewIP)=> {
  let MyPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
  let pc = new MyPeerConnection({
    iceServers: []
  });
  let noop = () => {
  };
  let localIPs = {};
  let ipRegex = /([0-9]{1,3}(.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g;
  let iterateIP = (ip) => {
    if (!localIPs[ip]) onNewIP(ip);
    localIPs[ip] = true;
  };
  pc.createDataChannel('');
  pc.createOffer().then((sdp) => {
    sdp.sdp.split('n').forEach(function (line) {
      if (line.indexOf('candidate') < 0) return;
      line.match(ipRegex).forEach(iterateIP);
    });
    pc.setLocalDescription(sdp, noop, noop);
  }).catch((reason) => {
  });
  pc.onicecandidate = (ice) => {
    if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return;
    ice.candidate.candidate.match(ipRegex).forEach(iterateIP);
  };
}

  getUserIP((ip) => {
    console.log(ip)
  });

如果电脑没获取到，基本上是因为浏览器限制了，解除方法如下：

解决方案：

火狐(FireFox) 删除隐藏IP

关于下列内容的输入:配置

搜索配置 media.peerconnection.enabled 改为false ( 刷新程序,IP正常显示 )

谷歌(Chrome) 删除隐藏IP

浏览器输入：chrome://flags/#enable-webrtc-hide-local-ips-with-mdns

把本地IP匿名化,由WBBERTC泄漏给残疾人为残疾人(新剧主持人,IP正负显示器)

eage浏览器删除隐藏ip

浏览器输入: edge://flags/#enable-webrtc-hide-local-ips-with-mdns

把本地IP匿名化,由WBBERTC泄漏给残疾人为残疾人(新剧主持人,IP正负显示器)