Posted By

adrianparr on 04/21/10

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Last Edited at 04/21/10 05:54am

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AS3 Checks and Returns Valid UK Postcode using Regular Expression

/ Published in: ActionScript 3

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var inputPostcode:String = "dn3 6gb";
trace("inputPostcode: "+inputPostcode);
var checkedPostcode:String = validateUkPostcode(inputPostcode).toUpperCase();
 
if (checkedPostcode == "") {
	trace("No valid postcode was found");
} else {
	trace("checkedPostcode: "+checkedPostcode);
}
 
 
 
function validateUkPostcode(str:String):String {
	var returnString:String;
	var pattern:RegExp = /[a-zA-Z]{1,2}[1-9]{1}[0-9]?([ ]{1}[0-9]{1}[a-zA-Z]{2})/g;
	var result:Object = pattern.exec(str);
	if(result == null) {
		returnString = "";
	} else {
		returnString = result[0];
	}
	return returnString;
}