validating a field + regular expression

hi experts

I have a function like

var validateCurrency = function(currency){

if currency is not alphabets and currency is not 3 characters long

alert('incorrect currency');

}

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Is there a regular expression to validate
if currency is not alphabets and currency is not 3 characters long

In my case currency can have values like
USD
RUP
GBP
..


thanks
royjaydAsked:
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Shaun KlineLead Software EngineerCommented:
You could do a not match:
if(!<your string>.match("[a-zA-Z]{3}"))
0
royjaydAuthor Commented:
thanks
but it doesnt look like its working
i have

      if(!currencyString.match("[a-zA-Z]{3}")){
                         alert('error');  //doesnt come here if currencyString is RRED
                  }

any idea what i am doing wrong.
0
leakim971PluritechnicianCommented:
Test page : http://jsfiddle.net/h1rjawL1/2/
var isCurrency = function(str) {
      return /^[a-z]{3}$/gi.test(str);
}
// USING, CHeCKING :

if( ! isCurrency("euR") ) {
      alert('error euR');
}
if( ! isCurrency("RRED") ) {
      alert('error RRED');
}

Open in new window

0

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royjaydAuthor Commented:
thanks
0
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