validate the company registration number in JavaScript

[KingIcode]

I want to validate company registration number in JavaScript which should be 14 characters long.

EG : 1993/041545/23

Currently this how I validate it.

HTML CODE

 
<label >Registration Number:</label></br>
<div class="warn"><span id="statusRegisternumber"></span></div>
 <input type="hidden" id="registernumber" class="hiddenId value=" Value="" />
<input type="text" name="registernumber" id="registernumber" onkeyup="validate_registernumber(this.value);"   placeholder="Registration Number" title="Please provide a valid company registration number" <?php getpostvalue('registernumber');?>/></br>
          </p>

JAVASCRIPT CODE

function validate_registernumber(registernumber)
{
  var regRegisternumber =  /^[0-9]{14}$/;		
  if(regRegisternumber.test(registernumber) == false){
 		document.getElementById("statusRegisternumber").innerHTML = "Registration Number is not valid";
  }else{			            document.getElementById("statusRegisternumber").innerHTML = "You have entered a valid Registration number";
	}
}

[Dormilich]

your RegExp looks for 14 digits, not for 4 digits followed by a slash followed by 6 digits followed by a slash followed by 2 digits.

[KingIcode]

Okay, please give me the best regex, i tried to do it in this order "4 digits followed by a slash followed by 6 digits followed by a slash followed by 2 digits. " but didn't work maybe, there is something m doing wrong

[Dormilich]

i tried to do it in this order "4 digits followed by a slash followed by 6 digits followed by a slash followed by 2 digits. " but didn't work maybe, there is something m doing wrong

if you post your trial, I can tell you what was wrong. (I would stab a guess at unescaped characters)

[KingIcode]

He is my regex:

/^[0-9/]{4}[0-9/]{6}[0-9/]{2}$/

[Dormilich]

[0-9/]{4} that looks for 4 characters, which can be either a digit or a slash. i.e. //// would match as would 8/15. in the end your Regexp is 2 characters short the requirement.

[KingIcode]

I can put in 1224/145874/
But i cant put in 224/145874/21

[Dormilich]

that’s correct.

in the end your Regexp is 2 characters short the requirement.

[KingIcode]

This sort out my error

/^[0-9/]{4}[0-9/]{8}[0-9/]{2}$/

. Thanks buddy.

[Dormilich]

you can shorten that considerably: /^[\d/]{14}$/

[KingIcode]

That will be awesome, nice and short

[Dormilich]

and it will allow some values that are clearly not a registration number.