[RESOLVED] Regular Expression

@mike-web-devApr 13.2011

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}$/;[/CODE]

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

Any ideas?

Thanks for any help!

Mike

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JavaScript

16 Comments(s) _↴

@Rufe0Apr 13.2011 — #mk(15|17|19|77|1)s

@mike-web-devauthorApr 13.2011 — #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-devauthorApr 13.2011 — #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
 }[/CODE]

@Rufe0Apr 13.2011 — #mk(1|2|3|4|5|6|7|8|9|10|11|12|13|15|17|19|77)s

@Rufe0Apr 13.2011 — #

[code=html]<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>
 [/code]

@mike-web-devauthorApr 13.2011 — #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
   }[/CODE]

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

Thanks!

@Rufe0Apr 13.2011 — #

[code=html]<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>[/code]

@Rufe0Apr 13.2011 — #try this

[code=html]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
 }[/code]

@mike-web-devauthorApr 13.2011 — #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
   }[/CODE]

thanks,

Mike

@mike-web-devauthorApr 13.2011 — #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>[/CODE]

@Rufe0Apr 13.2011 — #

[code=html]<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> [/code]

@Rufe0Apr 13.2011 — #ah cool good good

@mike-web-devauthorApr 13.2011 — #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!! ?

@WolfShadeApr 13.2011 — #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".

<i>
 </i>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

@mike-web-devauthorApr 13.2011 — #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".

<i>
 </i>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[/QUOTE]

oh woah really? thats brilliant thank you i was unaware of that! i will impliment that across all of my regular expressions! thanks alot!

@Rufe0Apr 14.2011 — #Well yeah you should probably do
[code=html]string.toUpperCase();[/code]

to convert the postcode to capitals anyway

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