/******************************************************************************* FILE: RegExpValidate.js DESCRIPTION: This file contains a library of validation functions using javascript regular expressions. Library also contains functions that re- format fields for display or for storage. VALIDATION FUNCTIONS: validateEmail - checks format of email address validateUSPhone - checks format of US phone number validateNumeric - checks for valid numeric value validateInteger - checks for valid integer value validateNotEmpty - checks for blank form field validateUSZip - checks for valid US zip code validateUSDate - checks for valid date in US format validateValue - checks a string against supplied pattern FORMAT FUNCTIONS: rightTrim - removes trailing spaces from a string leftTrim - removes leading spaces from a string trimAll - removes leading and trailing spaces from a string removeCurrency - removes currency formatting characters (), $ addCurrency - inserts currency formatting characters removeCommas - removes comma separators from a number addCommas - adds comma separators to a number removeCharacters - removes characters from a string that match passed pattern AUTHOR: Karen Gayda DATE: 03/24/2000 *******************************************************************************/ function validateEmail(strValue) { /************************************************ DESCRIPTION: Validates that a string contains a valid email pattern. PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. REMARKS: Accounts for email with country appended does not validate that email contains valid URL type (.com, .gov, etc.) or valid country suffix. *************************************************/ var objRegExp = /(^[a-z]([a-z_\.]*)@([a-z_\.]*)([.][a-z]{3})$)|(^[a-z]([a-z_\.]*)@([a-z_\.]*)(\.[a-z]{3})(\.[a-z]{2})*$)/i; //check for valid email return objRegExp.test(strValue); } function validateUSPhone(strValue) { /************************************************ DESCRIPTION: Validates that a string contains valid US phone pattern. Ex. (999) 999-9999 or (999)999-9999 PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. *************************************************/ var objRegExp = /^\([1-9]\d{2}\)\s?\d{3}\-\d{4}$/; //check for valid us phone with or without space between //area code return objRegExp.test(strValue); } function validateNumeric(strValue) { /****************************************************************************** DESCRIPTION: Validates that a string contains only valid numbers. PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. ******************************************************************************/ var objRegExp = /(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/; //check for numeric characters return objRegExp.test(strValue); } function validateInteger(strValue) { /************************************************ DESCRIPTION: Validates that a string contains only valid integer number. PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. ******************************************************************************/ var objRegExp = /(^-?\d\d*$)/; //check for integer characters return objRegExp.test(strValue); } function validateNotEmpty(strValue) { /************************************************ DESCRIPTION: Validates that a string is not all blank (whitespace) characters. PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. *************************************************/ var strTemp = strValue; strTemp = trimAll(strTemp); if (strTemp.length > 0) { return true; } return false; } function validateUSZip(strValue) { /************************************************ DESCRIPTION: Validates that a string a United States zip code in 5 digit format or zip+4 format. 99999 or 99999-9999 PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. *************************************************/ var objRegExp = /(^\d{5}$)|(^\d{5}-\d{4}$)/; //check for valid US Zipcode return objRegExp.test(strValue); } function validateUSDate(strValue) { /************************************************ DESCRIPTION: Validates that a string contains only valid dates with 2 digit month, 2 digit day, 4 digit year. Date separator can be ., -, or /. Uses combination of regular expressions and string parsing to validate date. Ex. mm/dd/yyyy or mm-dd-yyyy or mm.dd.yyyy PARAMETERS: strValue - String to be tested for validity RETURNS: True if valid, otherwise false. REMARKS: Avoids some of the limitations of the Date.parse() method such as the date separator character. *************************************************/ var objRegExp = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{4}$/ //var objRegExp = /^\d{1,2}(\-|\/|\.)\d{1,2}\1\d{2}$/ //check to see if in correct format if (!objRegExp.test(strValue)) return false; //doesn't match pattern, bad date else { var strSeparator = strValue.substring(2, 3) //find date separator var arrayDate = strValue.split(strSeparator); //split date into month, day, year //create a lookup for months not equal to Feb. var arrayLookup = { '01': 31, '03': 31, '04': 30, '05': 31, '06': 30, '07': 31, '08': 31, '09': 30, '10': 31, '11': 30, '12': 31 } var intDay = parseInt(arrayDate[1]); //check if month value and day value agree if (arrayLookup[arrayDate[0]] != null) { if (intDay <= arrayLookup[arrayDate[0]] && intDay != 0) return true; //found in lookup table, good date } //check for February var intMonth = parseInt(arrayDate[0]); if (intMonth == 2) { var intYear = parseInt(arrayDate[2]); if (((intYear % 4 == 0 && intDay <= 29) || (intYear % 4 != 0 && intDay <= 28)) && intDay != 0) return true; //Feb. had valid number of days } } return false; //any other values, bad date } function validateValue(strValue, strMatchPattern) { /************************************************ DESCRIPTION: Validates that a string a matches a valid regular expression value. PARAMETERS: strValue - String to be tested for validity strMatchPattern - String containing a valid regular expression match pattern. RETURNS: True if valid, otherwise false. *************************************************/ var objRegExp = new RegExp(strMatchPattern); //check if string matches pattern return objRegExp.test(strValue); } function rightTrim(strValue) { /************************************************ DESCRIPTION: Trims trailing whitespace chars. PARAMETERS: strValue - String to be trimmed. RETURNS: Source string with right whitespaces removed. *************************************************/ var objRegExp = /^([\w\W]*)(\b\s*)$/; if (objRegExp.test(strValue)) { //remove trailing a whitespace characters strValue = strValue.replace(objRegExp, '$1'); } return strValue; } function leftTrim(strValue) { /************************************************ DESCRIPTION: Trims leading whitespace chars. PARAMETERS: strValue - String to be trimmed RETURNS: Source string with left whitespaces removed. *************************************************/ var objRegExp = /^(\s*)(\b[\w\W]*)$/; if (objRegExp.test(strValue)) { //remove leading a whitespace characters strValue = strValue.replace(objRegExp, '$2'); } return strValue; } function trimAll(strValue) { /************************************************ DESCRIPTION: Removes leading and trailing spaces. PARAMETERS: Source string from which spaces will be removed; RETURNS: Source string with whitespaces removed. *************************************************/ var objRegExp = /^(\s*)$/; //check for all spaces if (objRegExp.test(strValue)) { strValue = strValue.replace(objRegExp, ''); if (strValue.length == 0) return strValue; } //check for leading & trailing spaces objRegExp = /^(\s*)([\W\w]*)(\b\s*$)/; if (objRegExp.test(strValue)) { //remove leading and trailing whitespace characters strValue = strValue.replace(objRegExp, '$2'); } return strValue; } function removeCurrency(strValue) { /************************************************ DESCRIPTION: Removes currency formatting from source string. PARAMETERS: strValue - Source string from which currency formatting will be removed; RETURNS: Source string with commas removed. *************************************************/ var objRegExp = /\(/; var strMinus = ''; //check if negative if (objRegExp.test(strValue)) { strMinus = '-'; } objRegExp = /\)|\(|[,]/g; strValue = strValue.replace(objRegExp, ''); if (strValue.indexOf('$') >= 0) { strValue = strValue.substring(1, strValue.length); } return strMinus + strValue; } function addCurrency(strValue) { /************************************************ DESCRIPTION: Formats a number as currency. PARAMETERS: strValue - Source string to be formatted REMARKS: Assumes number passed is a valid numeric value in the rounded to 2 decimal places. If not, returns original value. *************************************************/ var objRegExp = /-?[0-9]+\.[0-9]{2}$/; if (objRegExp.test(strValue)) { objRegExp.compile('^-'); strValue = addCommas(strValue); if (objRegExp.test(strValue)) { strValue = '(' + strValue.replace(objRegExp, '') + ')'; } return '$' + strValue; } else return strValue; } function removeCommas(strValue) { /************************************************ DESCRIPTION: Removes commas from source string. PARAMETERS: strValue - Source string from which commas will be removed; RETURNS: Source string with commas removed. *************************************************/ var objRegExp = /,/g; //search for commas globally //replace all matches with empty strings return strValue.replace(objRegExp, ''); } function addCommas(strValue) { /************************************************ DESCRIPTION: Inserts commas into numeric string. PARAMETERS: strValue - source string containing commas. RETURNS: String modified with comma grouping if source was all numeric, otherwise source is returned. REMARKS: Used with integers or numbers with 2 or less decimal places. *************************************************/ var objRegExp = new RegExp('(-?[0-9]+)([0-9]{3})'); //check for match to search criteria while (objRegExp.test(strValue)) { //replace original string with first group match, //a comma, then second group match strValue = strValue.replace(objRegExp, '$1,$2'); } return strValue; } function removeCharacters(strValue, strMatchPattern) { /************************************************ DESCRIPTION: Removes characters from a source string based upon matches of the supplied pattern. PARAMETERS: strValue - source string containing number. RETURNS: String modified with characters matching search pattern removed USAGE: strNoSpaces = removeCharacters( ' sfdf dfd', '\s*') *************************************************/ var objRegExp = new RegExp(strMatchPattern, 'gi'); //replace passed pattern matches with blanks return strValue.replace(objRegExp, ''); } function validateSearchCriteria(searchform) { var min_price = searchform == "dynamic" ? document.getElementById('ctl00_ContentPlaceHolder1_SearchCriteria_scMinPrice').value : document.getElementById('ctl00_ContentPlaceHolder1_QuickSearch_MinPrice').value; var max_price = searchform == "dynamic" ? document.getElementById('ctl00_ContentPlaceHolder1_SearchCriteria_scMaxPrice').value : document.getElementById('ctl00_ContentPlaceHolder1_QuickSearch_MaxPrice').value; if (min_price != "") min_price = min_price.replace("Min Price", ""); if (max_price != "") max_price = max_price.replace("Max Price", ""); if (min_price == "" || max_price == "") { alert("You must enter a price range."); return false; } return true; }