IP Address validation for 0-255 and dot in javascript

Question

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Validate IP address is not 0.0.0.0 or multicast address
javascript regular expression to check for IP addresses

I need to perform IP Address validation that should accept 0-255 number range and dots.

I am trying with this code:

<script type='text/javascript'>
   function checkValid(eleValue) {

      if(!eleValue.match(/^[0-9]+\.?[0-9]*$/))
      {
         alert('Please enter Only Number or Dot');
      } 
   }
</script>

<input type="text" onkeyup='javascript:checkValid(this.value);' />

But its not working for me..

score 3 · Answer 1 · answered Nov 26 '12 at 07:47

3

you can use the following regex

/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/i

e.g.

/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/i.test('111.170.0.1') === true

answered Nov 26 '12 at 07:47

amd

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@zerkms what are exactly the problem ?, pat.test('001.001.125.255') >> true – amd Nov 26 '12 at 08:23
or right, your one will pass it, sorry – zerkms Nov 26 '12 at 08:51
1

I use `(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])` for 0-255 validation. It's basically `250-255 | 200-249 | 100-199 | 10-99 | 0-9`. – Wirone Jan 08 '16 at 10:23

IP Address validation for 0-255 and dot in javascript

1 Answers1