Javascript is unable to get (nor stores somewhere) the client IP, however javascript is able to create Http requests, and server side languages are able to retrieve the user public IP, so you could use this as advantage. In other words, if you want to retrieve the public IP of an useryou'll depend from a request to any server in order to retrieve the IP. However, with the introduction of the WebRTC, you'll be able to retrieve the private IP of the user with a trick using RTCPeerConnection.
How would one generate a MAC address in Javascript? Ask Question Asked 6 years, 1 month ago. Active 4 years, 6 months ago. Viewed 5k times 13. I need to generate a random MAC address for a project of mine, and I can not get it to work. Below is my current code (that is not working). Can anyone send javascript code to validate the network mac address (eg. 02:41:6d:22:12:f1) It accepts value from 00:00:00:00:00:00 to ff:ff:ff:ff:ff:ff. On keypress event of textbox, I need to al. You could simplify it and check if the last two characters in the string are hex characters (0-9, A-F) and if so, insert a.You can also use.replace to remove any occurrence of -if you (or someone else) types a dash instead of a colon. That way you can cover inserting colons if you don't type them at all, as well as converting any typed dashes to colons. How to get Client MAC address(Web): To get the client MAC address only way we can rely on JavaScript and Active X control of Microsoft.It is only work in IE if Active X enable for IE. As the ActiveXObject is not available with the Firefox, its not working with the firefox and is working fine in IE. This script is for IE only. Using a third party service (get public IP) If you need to provide cross-browser support, you'll be unable to use RTCPeerConnection to retrieve your client private IP, therefore the only resource you have it's to depend from an external service (a request to a server, third party service or your autoimplemented service in your own server).
In this article you'll learn how to retrieve the user IP (private using pure javascript and public using a third party service) easily with a couple of tricks.
Using webRTC (get private IP)
The RTCPeerConnection interface allow you to create a WebRTC connection between your computer and a remote peer. However, we are going to create an 'interrupted' version of it in order to retrieve the IP of the client using only javascript.
The createOffer method initiates the creation of a session description protocol (SDP) which offer information about any MediaStreamTracks attached to the WebRTC session, session, codes and any candidates already gathered by the ICE agents (which contains our goal, the IP).
In older versions, this method uses callbacks. However, now return a value based in a Promise that returns the information that we need when fullfilled:
Note: the pure javascript implementation will return the client private IP, not the public.
The getUserIP method expects as first parameter a function that will be invoked when the IP of the client is available. The callbacks receives a string (the ip) as first (and unique) parameter. You can see the previous snippet in action via JSFiddle:
Using a third party service (get public IP)
If you need to provide cross-browser support, you'll be unable to use RTCPeerConnection to retrieve your client private IP, therefore the only resource you have it's to depend from an external service (a request to a server, third party service or your autoimplemented service in your own server).
Insecure connections HTTP
To get the IP of the user from a website without SSL certificate, you can rely on ipinfo.io. This service offers an API to get the client IP with a simple ajax call:
The retrieven data object contains localization info like : country, city etc when available. The servers of ipinfo use latency based DNS routing to handle the request so quick as possible. Read more about ipinfo in the official website here.
Secure connections HTTPS (recommended)
To get the IP of the user from a website even in secured websites with SSL, you can use the ipify service which provides a friendly API to get the user IP easily. This service has no request limitations.
You can use it in your project requesting to the API (with the format parameter if you need) and you're ready to go.
| API URI | Response Type | Sample Output (IPv4) | Sample Output (IPv6) |
https://api.ipify.org | text | 11.111.111.111 | ? |
https://api.ipify.org?format=json | json | {'ip':'11.111.111.111'} | ? |
https://api.ipify.org?format=jsonp | jsonp | callback({'ip':'11.111.111.111'}); | ? |
https://api.ipify.org?format=jsonp&callback=getip | jsonp | getip({'ip':'11.111.111.111'}); | ? |
You can use it with JSONP:
Or retrieve an object with a json request using jQuery:
Besides, you can create, in case you have your own server and you're able to work on it, create your own private service that returns the IP of the user with a server language like PHP,ASP.NET etc.
Javascript Get Mac Address Of Visitor
Have fun !
We have several options. We can format the address either on the back-end after the form has been submitted. Or we can format it on the front end via a separate text field for each character pair, but that is too many fields to handle. A better solution is to use a single field and format the user input at the time of input or upon submit. In those cases, the former is better because the data will already be formatted when the overall form input is being validation after the user clicks the “Submit” button.
We are going to format the user input as it is being provided, thus having proper data when validated upon submit; when the request is being processed on the back-end; and in the resulting support ticket.
Out function is going to perform the following actions:
- Receive the user input as the form field object. I will explain below.
- Change all letters from the object value to upper case.
- If said value string is less than a complete MAC address (17 characters):
- Remove all non-alphanumeric characters. This is going to remove any delimiters the user might use.
- Append a colon (:) after every second character.
- Update the field value with the new string.
Below is one way to implement the MAC address formatting script.
Javascript Mac Address
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* As of this writing Microsoft announced within the last week that with their upcoming Xbox One update they are going to enable support for Wi-Fi authentication via the Xbox web browser.
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