Java script regular Expression for IP Address validation

Question

Can some one help me whether my java script code for IP Address validation is correct or not? I am using a regular expression that does not allow any other special characters other than dot and also does not allow non-numeric characters.I am trying to validate IP Address in web page, loaded in our Modem.IP address is not getting validated when web page is loaded in modem.Please find code snippet and help me in resolving this issue...

       function chkIPV4()
       {
          for(x=0;x<txtBox.length;x++)
          {
               var ip4add = document.getElementById(txtBox[x]).value;
               var name=txtBox[x];
               var chk_arr = ip4add.split(".");
               if(chk_arr.length != 4)
               {
                  alert(name +" is not Valid");
                  return false;
               }
               for(var i=0; i < chk_arr.length; i++)
               { 
                   if( !(/^\d+$/.test(chk_arr[i])))
                   {
                     alert(name +" is not Valid");
                      return false;
                   }
                   else if( chk_arr[i] < 0 || chk_arr[i] > 255)
                  {
                     alert(name +" is not Valid");
                     return false;
                   }
            }

     } 
     return true;}

[Refer this link.Hope it works.](http://stackoverflow.com/questions/10006459/regular-expression-for-ip-address-validation) — Karthick Kumar Ramakrishnan, Oct 06 '16 at 10:18
I want to know whether my code has an issue...so that I can resolve it — Sowmya Kaparthi, Oct 06 '16 at 10:21
I'm voting to close this question as off-topic because it belong to [code review](http://codereview.stackexchange.com/) — jcubic, Oct 06 '16 at 10:23

score 0 · Accepted Answer · answered Oct 06 '16 at 10:43

0

 var length= document.getElementById("txtBox").value.length;

Check your array value that seems error.

answered Oct 06 '16 at 10:43

Karthick Kumar Ramakrishnan

51
6

Java script regular Expression for IP Address validation

1 Answers1