Javascript validation for number and character combination

Question

1.00/5 (1 vote)

See more:

I have this combination " DE55680501010022061234 "
In this combination, first two letter is " DE " and followed by 20 numbers, and total of 22 length. How to check this format combination using JavaScript.

Posted 20-Jan-16 17:49pm

vinu paul

Updated 20-Jan-16 17:54pm

dan!sh

v2

Add a Solution

Comments

dan!sh 20-Jan-16 23:53pm

Is it always going to be DE<20 numbers> or first two characters might change?

vinu paul 20-Jan-16 23:57pm

It is always going to be DE<20 numbers>. First two characters not change

Patrice T 21-Jan-16 0:04am

Either use Regex or make a piece of code to do it.

2 solutions

Solution 2

Try with below code:

JavaScript

<script>
function myFunction() {
    var str = "DE55680501010022061234";
    var pattern = /^DE[0-9]{20}$/g;
	if(str.match(pattern) == null)
	{
		alert("Failed");
	}else{
		alert("Success");
	}
}
</script>

Posted 20-Jan-16 19:08pm

Manas_Kumar

Comments

aarif moh shaikh 21-Jan-16 1:42am

Good one .. +5

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

*dan!sh* · Accepted Answer · 2016-01-20T18:48:00

It is expected that you would attempt to do what you need and share the code you have tried with the question. Having said that, here is something you can make use of:

You can choose from either regex method or non-regex method from following code.

C#

function Validate() {
           var inputString = 'DE55680501010022061234';
           // using regex
           var regEx = /DE\d{20}$/;
           if (regEx.test(inputString) == false) {
               alert('Not right!')
           }

           // without regex
           if (inputString.length != 22) {
                alert('Not right!')
           }

           if (inputString.charCodeAt(0) != 68 || inputString.charCodeAt(1) != 69) {
               // not D or E
               alert('Not right!')
           }

           for (var i = 2; i < 22; i++) {
               if (!(inputString.charCodeAt(i) > 47 && inputString.charCodeAt(i) < 58)) {
                   alert('Not right!')
               }
           }
       }