获取ip地址：
function getIP(success,error){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 flag = false; let iterateIP = (ip) => {if (!localIPs[ip]) success&&success(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((err) => {error&&error(err)});pc.onicecandidate = (ice) => {if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) {if(!flag){let err = 'ip无法获取，请设置浏览器'error&&error(err)}flag=truereturn}ice.candidate.candidate.match(ipRegex).forEach(iterateIP);};}getIP((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
浏览器输入 about:config
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 Anonymize local IPs exposed by WebRTC 设置为 disabled ( 刷新程序,IP正常显示 )
