How to get the native IP address of vue

Vue.js is a popular front-end development framework that helps developers build dynamic and efficient user interfaces. In many Vue.js projects, we need to obtain the local IP address to identify the device and for network debugging and testing. Next, we'll cover how to get the local IP address in Vue.js.

1. Get the local IP address through native JavaScript

Vue.js is built on the basis of native JavaScript, so we can get the local IP address by using native JavaScript and Used in Vue.js. The following is a code example to obtain the local IP address through native JavaScript:

function getLocalIpAddress() {
  window.RTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
  var pc = new RTCPeerConnection({iceServers: []}), noop = function() {};
  pc.createDataChannel("");
  pc.createOffer(pc.setLocalDescription.bind(pc), noop);
  pc.onicecandidate = function(ice) {
    if (ice && ice.candidate && ice.candidate.candidate) {
      var s = ice.candidate.candidate.split('
')[0].split(' ')[4];
      return s;
    }
  };
}

This code uses the RTCPeerConnection object to obtain the local IP address, and returns it after obtaining the IP address through the onicecandidate event.

To use this code in Vue.js, we can wrap it in a Vue plugin and add it to the Vue instance.

2. Use a third-party library to obtain the local IP address

In addition to native JavaScript, we can also use a third-party library to obtain the local IP address. Among them, one of the more commonly used libraries is ipaddr.js. ipaddr.js is a pure JavaScript library that can be used to parse and format IP addresses. The following is a code example of how to use ipaddr.js to obtain an IP address from a local network:

import ipaddr from 'ipaddr.js';

const findLocalIpAddress = () => {
  return new Promise((resolve, reject) => {
    const RTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
    let pc = new RTCPeerConnection({iceServers: []})
    let ips = []
    pc.createDataChannel('')
    pc.createOffer().then(offer => pc.setLocalDescription(offer)).catch(e => console.log(e))
    pc.onicecandidate = event => {
      if (!event.candidate) {
        // all candidates have been sent
        resolve(ips)
      } else {
        const ip = ipaddr.parse(event.candidate.candidate.split(" ")[4]).toString()
        if (ips.indexOf(ip) == -1) {
          ips.push(ip)
        }
      }
    }
    setTimeout(() => {
      reject(new Error('Timeout'))
    }, 5000)
  })
}

In this code, we use the ipaddr.js library to parse the IP address from The RTC object receives the IP address and adds it to an array. We also use a Promise to return this array for easier use in Vue.js.

Summary

To get the local IP address in Vue.js, you can use native JavaScript or third-party libraries. Whichever method you choose, you'll need to wrap them in Vue.js and add them to your Vue instance so you can easily get the local IP address in your project.

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