[RESOLVED] Regular Expression

**mike-web-dev** · 04-13-2011 04:26 AM

Hi Gurus!

Iv written a regular expression to single out specific postcodes, however it currently returns all postcodes submitted. Could someone take a look at my regular expression and help me correct it?

Code:

/^[M]{1}[K]{1}([1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|17|19|77]){1,2}$/;

I am trying to single out only postcodes which start with MK1 - MK15, MK17, MK19 and MK77

Any ideas?

Thanks for any help!

Mike

**Rufe0** · 04-13-2011 04:54 AM

mk(15|17|19|77|1)\s

**mike-web-dev** · 04-13-2011 04:59 AM

sorry i need to include all possibilities between MK1 and MK15. Sorry this may not have been clear the first time around. If I use your code but include the additional possibilities from my expression will this work? is there a short hand way of including the numbers between 1 and 15?

Thanks.

**mike-web-dev** · 04-13-2011 05:03 AM

iv tried your code using a postcode MK1 however it still displays the alert no matter what postcode is added. here is my full script:

Code:

var regExpressMilton = /^MK(1|15|17|19|77)$/;
 
function checkForm(aForm) {
				
		if (!regExpressMilton.test(aForm.shipPostalCode.value)) {
		window.alert("congratulations! You have been awarded a special gift with your order!")	
		return true
		}
return true
}

**Rufe0** · 04-13-2011 05:05 AM

mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)\s

**Rufe0** · 04-13-2011 05:11 AM

HTML Code:

<html>
<body>

<script type="text/javascript">
var regexp1=new RegExp("mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)\s");

document.write(regexp1.test("mk1 gh45"));
document.write("<br />");
document.write(regexp1.test("aa1 aa43"));
</script>

</body>
</html>

**mike-web-dev** · 04-13-2011 05:14 AM

ok iv tried this code and now it doesnt display my alert in any situation?

here is my new code?

Code:

var regExpressMilton = /^MK(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)\s$/;
 
function checkForm(aForm) {

		if (regExpressMilton.test(aForm.shipPostalCode.value)) {
		window.alert("congratulations! You have been awarded a special gift with your order!")	
		return true
		}
	
		
        return true
        }

I see from your test that it seems to be working, so what is wrong with my code? really stuck on this! :s

Thanks!

**Rufe0** · 04-13-2011 05:14 AM

HTML Code:

<html>
<body>

<script type="text/javascript">
var regexp1=new RegExp("mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]");

document.write(regexp1.test("mk1 gh45"));
document.write("<br />");
document.write(regexp1.test("aa1 aa43"));
</script>

</body>
</html>

**Rufe0** · 04-13-2011 05:32 AM

try this

HTML Code:

var regExpressMilton = new RegExp("mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]");

function checkForm(aForm) {
	var a = regExpressMilton.test(aForm.shipPostalCode.value);
		if (a) {
		window.alert("congratulations! You have been awarded a special gift with your order!")	
		return true
		}
	return true
}

**mike-web-dev** · 04-13-2011 05:56 AM

Iv tried this and it doesnt seem to be giving me an alert message? perhaps if I show you my full code you will better udnerstand why I used the method I have.

Code:

var regExpressPostcode = /^([a-zA-Z]){2}([0-9][0-9]|[0-9]){1}\s([0-9][a-zA-z][a-zA-z]|[0-9][0-9][a-zA-z][a-zA-z]){1}$/;
		   
var regExpressFidelity = /^[a-zA-Z]{1}[a-zA-Z0-9]{4}\s*[a-zA-Z0-9]{5}\s*[a-zA-Z0-9]{3}\d{1}(@|!|\&){1}$/;

var regExpressMilton = /^MK(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]$/;
 
function checkForm(aForm) {

        if (!regExpressFidelity.test(aForm.fidelityCardNumber.value)){
        window.alert("Invalid Card Number. Please check your number and try again.")

        aForm.fidelityCardNumber.focus()
        aForm.fidelityCardNumber.select()
        return false
                }

// check for a valid postcode address format using the RegExp object method 'test()' 
        if (!regExpressPostcode.test(aForm.shipPostalCode.value)){
        window.alert("Please enter a correctly formatted UK postcode: eg. AB12 2BA or AB12 12AB")
                //gives focus to field and selects incorrect postcode format text
        aForm.shipPostalCode.focus()
        aForm.shipPostalCode.select()
        return false
                }
				
		if (regExpressMilton.test(aForm.shipPostalCode.value)) {
		window.alert("congratulations! You have been awarded a special gift with your order!")	
		return true
		}
	

        return true
        }

thanks,

Mike

**mike-web-dev** · 04-13-2011 07:17 AM

ah iv done it! it was the $ i had on the end of the string which was ending the expression! removed it and it now works. here is the finished full code for anyone interested!

Code:

<script type="text/javascript">

//<![CDATA[
		   
// create a regular expression to check UK postcode format
var regExpressPostcode = /^([a-zA-Z]){2}([0-9][0-9]|[0-9]){1}\s([0-9][a-zA-z][a-zA-z]|[0-9][0-9][a-zA-z][a-zA-z]){1}$/;
		   
var regExpressFidelity = /^[a-zA-Z]{1}[a-zA-Z0-9]{4}\s*[a-zA-Z0-9]{5}\s*[a-zA-Z0-9]{3}\d{1}(@|!|\&){1}$/;

// var regExpressMilton = new RegExp("mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]");

var regExpressMilton = /^MK(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]/;
 
function checkForm(aForm) {

        if (!regExpressFidelity.test(aForm.fidelityCardNumber.value)){
        window.alert("Invalid Card Number. Please check your number and try again.")

        aForm.fidelityCardNumber.focus()
        aForm.fidelityCardNumber.select()
        return false
                }

// check for a valid postcode address format using the RegExp object method 'test()' 
        if (!regExpressPostcode.test(aForm.shipPostalCode.value)){
        window.alert("Please enter a correctly formatted UK postcode: eg. AB12 2BA or AB12 12AB")
                //gives focus to field and selects incorrect postcode format text
        aForm.shipPostalCode.focus()
        aForm.shipPostalCode.select()
        return false
                }
				
		if (regExpressMilton.test(aForm.shipPostalCode.value)) {
		window.alert("Congratulations! You have been awarded a special gift with your order!")	
		return true
		}
        return true
        }
		

	//]]>	
</script>

**Rufe0** · 04-13-2011 08:14 AM

HTML Code:

<html>
<head>
<script language="JavaScript" type="text/javascript">
var regExpressMilton = new RegExp("(mk|MK)(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)]");
 function checkForm() {
var postalcode = document.getElementById("shipPostalCode").value;
var a = regExpressMilton.test(postalcode);
if (a) {
	window.alert("congratulations! You have been awarded a special gift with your order!");	
}
return true
}
</script>
</head>
<body>
<form id="form1">
<input id="shipPostalCode" />
<br />
<a onclick="checkForm();">Check</a>
</form>
</body>
</html>

**Rufe0** · 04-13-2011 08:15 AM

ah cool good good

**mike-web-dev** · 04-13-2011 08:17 AM

yup got it thank you! all working now! cheers for the help!! i have implimented the (mk|MK) as you suggested also!

Thank you once again!!

**WolfShade** · 04-13-2011 08:48 AM

If you do this, you can get rid of the "(mk|MK)" and append the mask with /i (case insensitive) which will test for "mk", "MK", "mK", and "Mk".

Code:

var regExpressMilton = /mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)[^(0-9)])/i;

http://www.w3schools.com/jsref/jsref_regexp_test.asp

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