可以直接使用，不需要导入其他配置
看代码
1 <script>
2 //获取内网ip
3 var RTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
4 if (RTCPeerConnection) (
5 function () {
6 var rtc = new RTCPeerConnection({iceServers:[]});
7 if (1 || window.mozRTCPeerConnection) {
8 rtc.createDataChannel('', {reliable:false});
9 };
10
11 rtc.onicecandidate = function (evt) {
12 if (evt.candidate) grepSDP("a="+evt.candidate.candidate);
13 };
14 rtc.createOffer(function (offerDesc) {
15 grepSDP(offerDesc.sdp);
16 rtc.setLocalDescription(offerDesc);
17 }, function (e) { console.warn("offer failed", e); });
18 var addrs = Object.create(null);
19 addrs["0.0.0.0"] = false;
20 function updateDisplay(newAddr) {
21 if (newAddr in addrs) return;
22 else addrs[newAddr] = true;
23 var displayAddrs = Object.keys(addrs).filter(function (k) { return addrs[k]; });
24 for(var i = 0; i < displayAddrs.length; i++){
25 if(displayAddrs[i].length > 16){
26 displayAddrs.splice(i, 1);
27 i--;
28 }
29 }
30 //打印出该设备连接的所有内网ip
31 console.log(displayAddrs);
32 //排第一个ip
33 console.log(displayAddrs[0]);
34 }
35 function grepSDP(sdp) {
36 var hosts = [];
37 sdp.split('\r\n').forEach(function (line, index, arr) {
38 if (~line.indexOf("a=candidate")) {
39 var parts = line.split(' '),
40 addr = parts[4],
41 type = parts[7];
42 if (type === 'host') updateDisplay(addr);
43 } else if (~line.indexOf("c=")) {
44 var parts = line.split(' '),
45 addr = parts[2];
46 updateDisplay(addr);
47 }
48 });
49 }
50 })();
51 else{
52 console.log("请使用主流浏览器：chrome,firefox,opera,safari");
53 }
54
55 </script>
测试结果：
