Get client IP address via third party web service

Question

I would like to read my ip address from the following page http   l2 io ip or other  using javascript to save him in my variable  myIp    function getMyIP       var myIp          return myIp      How can you do

User · Answer

This pulls back client info as well   var get   function u       var x   new XMLHttpRequest      x open  GET   u  false       x send        return x responseText     JSON parse get  http   ifconfig me all json

User · Answer

Checking your linked site  you may include a script tag passing a  var desiredVarName parameter which will be set as a global variable containing the IP address    lt script type  text javascript  src  http   l2 io ip js var myip  gt  lt  script gt                                                         lt  --      -- gt   lt script gt alert myip   lt  script gt    Demo  I believe I don t have to say that this can be easily spoofed  through either use of proxies or spoofed request headers   but it is worth noting in any case     HTTPS support  In case your page is served using the https protocol  most browsers will block content in the same page served using the http protocol  that includes scripts and images   so the options are rather limited  If you have  lt  5k hits day  the Smart IP API can be used  For instance    lt script gt  var myip  function ip callback o        myip   o host     lt  script gt   lt script src  https   smart-ip net geoip-json callback ip callback  gt  lt  script gt   lt script gt alert myip   lt  script gt    Demo  Edit  Apparently  this https service s certificate has expired so the user would have to add an exception manually  Open its API directly to check the certificate state  https   smart-ip net geoip-json    With back-end logic  The most resilient and simple way  in case you have back-end server logic  would be to simply output the requester s IP inside a  lt script gt  tag  this way you don t need to rely on external resources  For example   PHP    lt script gt var myip     lt  php echo   SERVER  REMOTE ADDR      gt    lt  script gt    There s also a more sturdy PHP solution  accounting for headers that are sometimes set by proxies  in this related answer   C     lt script gt var myip     lt    Request UserHostAddress   gt    lt  script gt

User · Answer

Well  if in the HTML you import a script      lt script type  text javascript  src    stier linuxfaq org ip php  gt  lt  script gt    You can then use the variable userIP  which would be the visitor s IP address  anywhere on the page   To redirect   lt script gt if  userIP     555 555 555 55    window location replace  http   192 168 1 3 flex-start examples navbar-fixed-top      lt  script gt   Or to show it on the page  document write  userIP    DISCLAIMER  I am the author of the script I said to import  The script comes up with the IP by using PHP  The source code of the script is below    lt  php     Gets the IP address   ip   getenv  REMOTE ADDR       Echo  var userIP         ip             gt

User · Answer

If you face an issue of CORS  you can use https   api ipify org    function httpGet theUrl        var xmlHttp   new XMLHttpRequest        xmlHttp open   GET   theUrl  false        xmlHttp send  null        return xmlHttp responseText      publicIp   httpGet  https   api ipify org     alert  Public IP      publicIp     I agree that using synchronous HTTP call is not good idea  You can use async ajax call then

User · Answer

A more reliable REST endpoint would be http   freegeoip net json    Returns the ip address along with the geo-location too  Also has cross-domain requests enabled  Access-Control-Allow-Origin     so you don t have to code around JSONP

User · Answer

lt script type  application javascript  gt              function getip json               alert json ip      alerts the ip address            lt  script gt        lt script type  application javascript  src  http   jsonip appspot com  callback getip  gt  lt  script gt

User · Answer

ajax           url     freegeoip net json            type   POST           dataType   jsonp           success  function location                alert location ip                       This will work https too

[javascript] Get client IP address via third party web service

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