/* formValidation.js */ /* Written from use with genericForm.asp only */ // How to call validation functions... // validate(nStr, ElementName, ElementLabel) // Where nStr is a string containing a number referring to the type of validation (Listed below) // Where ElementName is the name of the form input element // Where Label is the name used to identify the element to the user. // Validation Codes. // A negative validation code indicates a manditory form element. // 1 = GENERAL (All characters allowed) // 2 = ALPHA-NUMERIC (Only Characters in the Charset and whitespace are permitted) // 3 = ALPHA ONLY (Upper or lowercase) // 4 = NUMBER (positive integer) // 5 = NUMBER (real) // 6_min_max = NUMBER (range between min and max) // 7 = EMAIL (a@b.c) // 8 = ONLY ALPHA-NUMERIC (Leters and numbers only - no whitespace or symbols) // 9 = DATE (Any UTC date, of format: YYYY-MM-DDThh:mm:ss.sssZ, or normal date of format: DD/MM/YYYY) // 10 = TIME (TIMES of format: HH:MM, or, HH:MM:SS ) // 11 = FILE // 12_XX/XX/XXXX_X = DATE (Check date is BEFORE, AFTER or EQUAL the specified date. Check switch below.) // 13 = currency // Special Validation Codes. // 50 = Compares 2 strings (Used with password when confirm = true) // 51 = Compares a string with an array of strings. (The array must be the same name as the textbox) // 55 = UK NATIONAL INSURANCE NUMBER (AB 12 34 56 C) // 60 = DATE-TIME (ONLY DD/MM/YYYY:HH:MM:SS, SQL uses date-times of this format but uses whitespace at subString(10,11)) // VARIABLE DECLARATIONS var specialchars = ""; var namechars = "'" var basicpunc = ".,?£$()-!+=#@_&^~*{}[];:|\/"; var numbers = "0123456789"; var alpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; var whitespace = " \t\n\r"; var invalidpathchars = "\"/*?<>|" // This function is designed to check, and maybe change, the format of a submitted date // you can have a standard ISO or UTC date (YYYY-MM-DDThh:mm:ss.sssZ), or all the possible permutations // of a character from 'basicPunc' as the delimiter, with the date in british format. function isDate(date) { var allValid; var delimitType = ""; var dArr = new Array(); if ((date.length == 25) && (date.substring(24,25) == "Z") && (date.substring(10,11) == "T")) { allValid = true; } else if ((date.length == 9) || (date.length == 10) || (date.length == 8)) { for(var aa=0;aa 0) && (Number(dArr[1])> 0) && (Number(dArr[2] > 0))) { allValid = true; } else { allValid = false; } } else { allValid = false; } } return allValid; } // Times can be passed as HH:MM, or HH:MM:SS, the delimiter MUST be a colon. function isTime(time) { var arrTime = time.split(":") if( arrTime.length < 2 || arrTime.length > 3 ) return false; if( Number(arrTime[0]) >= 24 ) return false; // HOURS if( Number(arrTime[1]) >= 60 ) return false; // MINUTES if( arrTime.length == 3 ){ if( Number(arrTime[2]) >= 60 ) return false; } // SECONDS (optional) return true; } // Abuses the isDate and isTime functions because SQL server doesn't use any 'standard' delimiters // to split the date from the time. It's lovely really. function isDateTime(dateTime) { var allValid = false; if(dateTime.length==19) { var strDate = dateTime.subSting(0,10); var strTime = dateTime.subString(11,19); if ((isDate(strDate)) && (isTime(strTime))) { allValid = true; } } return allValid; } // isEmpty returns true if TestString is empty or whitespace. function isEmpty(TestString) { if ((TestString == null) || (TestString.length == 0)) return true else { for (i = 0; i < TestString.length; i++) { // Check that current character isn't whitespace. var c = TestString.charAt(i); if (whitespace.indexOf(c) == -1) return false; } } return true; } // isValid returns true if all characters in TestString are also in ValidChars function isValid(TestString, ValidChars) { for (i = 0; i < TestString.length; i++) { var c = TestString.charAt(i); if (ValidChars.indexOf(c) == -1) return false; } return true; } function isInRange(testValue, minValue, maxValue) { if(testValue == NaN) return false; if((testValue >= minValue) && (testValue <= maxValue)) return true; else return false; } function constructDate(year, month, day) { //pass me the individual elements and I give you the full date you can perform operations against //it appears the date object numbers it's months 0-11, so i have reduced the month variable - MW 03/03/2003 var name = new Date(parseFloat(year), parseFloat(month-1), parseFloat(day)); return name // Oh dear, it appears that abs only returns a positive number!!!! // Removed for error553, JMM 3/3/04, God knows why it was there in the first place. Answers on a postcard... // var objMath = Math.abs(name.valueOf()); // return objMath } function isEmail(TestString){ i = 1; StringLength = TestString.length; while ((i < StringLength) && (TestString.charAt(i) != "@")){ i++ } if ((i >= StringLength) || (TestString.charAt(i) != "@")) return false; else i += 2; while ((i < StringLength) && (TestString.charAt(i) != ".")){ i++ } if ((i >= StringLength - 1) || (TestString.charAt(i) != ".")) return false; else return true; } // Don't you just love regular expressions? The format of a NI is specified in TSR2524. JMM 13/10/04 // Altered to check 1st and 2nd letters individually as wasnt working to the spec. AH 23/11/04 function isValidNINumber(NINum){ /* NINum = NINum.replace(/ /g,""); var NIreg = /^\D{2}\d{6}(\D$|$)/i // Simple Format of a NI number (aa111111a). */ var NIformatReg = /^\D{2} ?\d{2} ?\d{2} ?\d{2} ?([ABCD]$|$)/i; // NI Format (allows spaces) var NIinvalidFirstLetters = /^(gb|bg|nk|kn|tn|nt|zz)/i; // NI first two letters var NIinvalidFirst = /^[DFIOQUV]/i; // NI first letter var NIinvalidSecond = /^[DFIOQUV]|[DFIOQUV]/i; // NI second letter if(!NIformatReg.test(NINum)) return false; if(NIinvalidFirstLetters.test(NINum)) return false; if(NIinvalidFirst.test(NINum)) return false; if(NIinvalidSecond.test(NINum)) return false; return true; } // This function is used to show 'non-mandatory' validation errors function displaySubErrorMsg() { // alert(SubErrorMsg) ProblemField = document.forms[0].elements[SubErrorMsg[0]] ProblemField.className = "formItemInvalid"; if(ProblemField.type != "hidden") { ProblemField.select(); ProblemField.focus(); } alert("The value in \""+ SubErrorMsg[1] +"\" field is invalid because\n"+ SubErrorMsg[2]); } // ----------------------------------------- VALIDATE STARTS HERE ----------------- function validate(CodeInput, ElementName, ElementLabel) { CodeNumber = parseInt(CodeInput); InputField = document.forms[0].elements[ElementName]; InputField.className = "formItem"; if (isNaN(CodeNumber)) { alert("formValidation Error:\n\""+ CodeInput +"\" is not a valid code number"); return false; } // ------------- This bit checks all required fields are completed -------------------------- if(CodeNumber < 0) { CodeNumber = Math.abs(CodeNumber) if(isEmpty(InputField.value)) { ErrorMsg = "Please enter an email address."; InputField.className = "formItemInvalid"; InputField.focus(); return false; } } // ------------- This bit checks that inputs are correct to their validation type ---------- if((!isEmpty(InputField.value)) && (ErrorMsg == "") && (SubErrorMsg[2] == "")) { switch(CodeNumber) { case 0 : break; case 1 : break; case 2 : if(!isValid(InputField.value, alpha + numbers + whitespace + basicpunc)) SubErrorMsg[2] = "this field cannot contain special characters."; break; case 3 : if(!isValid(InputField.value, alpha+ whitespace)) SubErrorMsg[2] = "this field can only contain alphabetical characters."; break; case 4 : if(!isValid(InputField.value, numbers)) SubErrorMsg[2] = "this field must be a whole number greater than 0."; break; case 5 : if(isNaN(Number(InputField.value))) SubErrorMsg[2] = "this field must be a number."; break; case 6 : CodeInput = CodeInput.split("_"); minValue = parseFloat(CodeInput[1]); maxValue = parseFloat(CodeInput[2]); if(!isInRange(parseFloat(InputField.value), minValue, maxValue)) SubErrorMsg[2] = "this field must be a number between "+ minValue +" and "+ maxValue +"."; break; case 7 : if(!isEmail(InputField.value)) SubErrorMsg[2] = "this field must be a valid e-mail address." break; case 8 : if(!isValid(InputField.value, alpha + numbers)) SubErrorMsg[2] = "this field must not contain whitespace or symbols."; break; case 9 : if(!isDate(InputField.value)) SubErrorMsg[2] = "this field must be a valid date, ie: 02/04/1983."; break; case 10 : if(!isTime(InputField.value)) SubErrorMsg[2] = "this field must be a valid 24 hour time, ie: 17:30:00."; break; case 11 : if(isValid(InputField.value, invalidpathchars)) SubErrorMsg[2] = "this field must be a valid file path."; break; case 12 : //get individual elements from user CodeInput = CodeInput.split("_"); checkDate = CodeInput[1].split("/"); checkStatus = parseFloat(CodeInput[2]); //integer that states whether you want to check date is before, after or equal. See switch below. //alert("user input: " + InputField.value); inputFieldDate = InputField.value.split("/") //user input //construct the two dates for comparison specifiedDate = constructDate(checkDate[2], checkDate[1], checkDate[0]); inputFieldDate = constructDate(inputFieldDate[2], inputFieldDate[1], inputFieldDate[0]); //alert(specifiedDate.getUTCFullYear()) /* //Left in if needed for debugging later. var sd = new Date(specifiedDate) var ifd = new Date(inputFieldDate) alert("specifiedDate: " + sd.toDateString()) alert("inputFieldDate: " + ifd.toDateString()) */ //check status switch(checkStatus) { case 0: //if date specified comes after or is equal to the input field date if (specifiedDate <= inputFieldDate) { SubErrorMsg[2] = "the date given has to be before " + CodeInput[1]; } break; case 1: //if date specified comes before or is equal to the input field date //alert("specifiedDate: " + specifiedDate); //alert("inputFieldDate: " + inputFieldDate); if (specifiedDate >= inputFieldDate) { SubErrorMsg[2] = "the date given has to be after " + CodeInput[1]; } break; case 2: //if date specified is equal to the input field date if (specifiedDate != inputFieldDate) { SubErrorMsg[2] = "the date given has to be equal to " + CodeInput[1]; } break; case 3: //if date specified comes after the input field date if (specifiedDate < inputFieldDate) { SubErrorMsg[2] = "the date given has to be on or before " + CodeInput[1]; } break; case 4: //if date specified comes before the input field date if (specifiedDate > inputFieldDate) { SubErrorMsg[2] = "the date given has to be on or after " + CodeInput[1]; } break; } break; case 13 : if (!isValid(InputField.value,numbers)) { currencyName = InputField.name.substring(0,InputField.name.length - 5); currencyUnit = InputField.name.substring(InputField.name.length - 5); //document.forms[0].elements[currencyName + "pound"].className = "formItemInvalid"; //document.forms[0].elements[currencyName + "pence"].className = "formItemInvalid"; ElementName = currencyName + currencyUnit; SubErrorMsg[2] = "it has to be a number"; } break; case 14 : if(isNaN(InputField.value) || ((InputField.value.indexOf(".") + 3 < InputField.value.length) && (InputField.value.indexOf(".") > 0))) { SubErrorMsg[2] = "this field must be a number with no more than 2 decimal places."; } break; case 15: if (!isValid(InputField.value, alpha + whitespace + namechars)) SubErrorMsg[2] = "this field cannot contain special characters."; break; case 16: if (!isValid(InputField.value, alpha + whitespace + namechars + numbers)) SubErrorMsg[2] = "this field cannot contain special characters."; break; case 50 : if(InputField.value != document.forms[0].elements["Confirm" + ElementName].value) { SubErrorMsg[2] = "this field and Confirm "+ ElementLabel +" are not the same value."; document.forms[0].elements["Confirm" + ElementName].className = "formItemInvalid"; } break; case 51 : CheckArray = eval(ElementName); for(GFcount=0; GFcount < CheckArray.length; GFcount++) { if(InputField.value.toLowerCase() == CheckArray[GFcount].toLowerCase()) { SubErrorMsg[2] = "\"" + InputField.value + "\"" + " already exists in the database."; break; } } break; case 55 : if(!isValidNINumber(InputField.value)) SubErrorMsg[2] = "this field must be a valid national insurance number in the following format:\n\tAANNNNNNA, where A = letter and N = numeral.\n\tE.g. AB12 34 56C"; break; case 60 : if(!isDateTime(InputField.value)) SubErrorMsg[2] = "this field must be a valid date-time\nie: 02/04/1983:17:30:00."; break; } if(SubErrorMsg[2] != "") { SubErrorMsg[0] = ElementName; SubErrorMsg[1] = ElementLabel.replace(/<[^<]+>/gi,""); // Regular expression to strip HTML from the label. } } else return false; } function isFormValid() { if ((ErrorMsg == "") && (SubErrorMsg[0] == "")) return true; else { if(ErrorMsg == "") displaySubErrorMsg(); else alert(ErrorMsg); return false; } } // ASPX form validation by IR 26/3/MMIV // form items to be validated contain the attribute, "validation=true" // and also the attribute "validationCode=[ValidationCode]".... // wait! there's also "validationName=[name]" function validateASPX() { ErrorMsg = ""; SubErrorMsg = new Array ("","",""); for (var i=0; i