jay.barnes Posted March 19, 2010 Share Posted March 19, 2010 Hi, all! I've got a field that I need users to fill with either: 1. An American postal code (example: "47582") 2. A Canadian postal code (example: "A8G 1F4") 3. A city/state abbreviation (example: "Atlanta, GA", or "Quebec City, QC") I know how to make sure that they only enter numbers in the field, but that would not allow option 2 or 3. The best validation checks I can make are: if the entry is all letters (and possibly spaces or commas) - assume the entry is a city/state combination - make sure that there are two letters after the comma or final space in the string if the entry is all numbers - assume the the entry is an American postal code - make sure that there are only five digits in the entry if the entry is a combination letters and numbers - Assume the entry is a Canadian postal code - make sure that the entry follows the "A1A 1A1" format so, that's my question: How do I make the form element "document.form.text_field.value" look for such values? Thank you! Quote Link to comment Share on other sites More sharing options...
jay.barnes Posted March 23, 2010 Author Share Posted March 23, 2010 Still researching this issue.... I think I've found the criteria that I'm looking for, would like some help with my syntax, though.... function hasNumbers(string) { var regex = /\d/g; return regex.test(string); } function validateOriginFormat() { var error = ""; if ( (document.load_search.Search_Origin_Type_1.checked == true)&& (!hasNumbers(document.load_search.Search_Origin_Radius_Point.value))&&//if the value of the field has no numbers in it, and, thusly is not an american or canadian zip code (document.load_search.Search_Origin_Radius_Point.value.substr(-3, 1)//and the third to last character of the value is not a letter or number ) { error = "Please use a valid city/state format (example: Boston, MA or Toronto, ON) in Step 3!\n"//recognize the the intended input was a city and state, but the proper format of "City, ST" was not used. } return error; } Anyone able to point me in the right direction in regards to where I'm going wrong with my syntax? Thanks! Quote Link to comment Share on other sites More sharing options...
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