/* -------------------------------------------------------------------------------- NAME OF SCRIPT : JS_GENERICVALIDATOR.JS CALLED PROGRAM : include this script file where ever you require validations CALLING PROGRAM : nothing LOGICAL DESCRIPTION : used to validate all the fields in the form where the script is included : you have to assin the respective character after delimiter for vaious validation routines : ex; id=~BI to valideate blank and interger, id=U to validate uppercase letters etc... AUTHOR OF THE SCRIPT : SriHari Raju LAST DATE OF MODIFICATION : june-20-2002 Copyright (c) 2001 Global Tele-Systems, Mahape ----------------------------------------------------------------------------------- ----------------------------------------------------------------------------------- USAGE: an example of using genericvalidator call the below function on click of your submit button or wher ever you require it function submitit() { if (verifyIt() == true){ //your other functions after you finish validating all the fields can be included here document.forms[0].submit(); } } ----------------------------------------------------------------------------------- */ var DELIMITER = "~" //delimiter to be used with id attribute, append the below letters after this delimiter depends on your requirement //append below assigned values to the Id attribute of your form elements var INTEGERS = "I" //append "I" to the Id value to accept only integers var CHARACTERS = "C" //to accept only characters A to Z var ALPHANUMERIC = "A" //to accept only characters A to Z and 0 to 9 var EMAIL = "E" // to validate email address var BLANK = "B" // to check for the blank spaces var UPPERCASE = "U" // to accept only Upper case letters var LOWERCASE = "L" // to accept only Lower case letters var NOSPECIALSYMBOLS = "S" // to deny special symbols var MANDATORY = "M" // to make check box or option box selection mandatory var CHARLENGTH250 = "1" // Accepts text length upto 250 only var NOBLANKSASFIRSTCHAR = "N" // words with one or more spaces as begining characters are not allowed var NOBLANKSINWORDS = "I" // words with more than one space in the middles of the words are not allowed var breakstatus //variable used to know and required to stop executing other statment and set focus on the form element function verifyIt() { //main function from which all the sub functions will be called depends on the types of form elements //returns true if all the validations are checked else returns false breakstatus = 'false' //by default variable value var form = document.forms[0] //takin the form object to a variable for (i = 0; i < form.elements.length; i++) //iterates through the loop depends on the number of elements of the form { //alert(form.elements[i].name) //alert(form.elements[i].type) //alert(form.elements[i].value) if (form.elements[i].type == "text" || form.elements[i].type == "password" || form.elements[i].type == "textarea") //checks for all the text and password fields { if (breakstatus == "true"){ return(false) //exits the loop if breakstatus is true i.e if any validation is failed } else { textboxhandler(form.elements[i]) //checks various validations done on text fields depends on the String of Characters } } if (form.elements[i].type == "checkbox") //checks for all the check box fields { if (breakstatus == "true"){ return(false) //exits the loop if breakstatus is true i.e if any validation is failed } else { checkboxhandler(form.elements[i]) //checks various validations done on check box fields depends on the String of Characters } } } if (breakstatus == 'false'){ //checks for breakstatus and returns true if all the validations are finished return(true); } else { return(false); } } //************************************************************************* function checkboxhandler(objelement) { var strid = objelement.id //takes in the Id of the field var elementname = objelement.name //takes in the name of the field //var textvalue = objelement.value //takes in the value of the field // takes the string appended after the delimiter in the id attribute value var strchars = (strid.substring(strid.indexOf(DELIMITER)+1,strid.length)) for (j = 0; j < strchars.length; j++) //counter runs until it complets all the chars in the string { strchar = (strchars.substring(j,j+1)); //takes in the single charactor switch (strchar.toUpperCase()) //acts as select case statement { case MANDATORY: //email validation { if (checkelement(objelement) == false) { alert('You can not Deselect Mandatory field : ' + elementname) setfocus(objelement) //sets focus on the field return } } break } } } //************************************************************************* function textboxhandler(objelement) //function handles all the validations required on textboxes, password and textarea boxes { var strid = objelement.id //takes in the Id of the field var elementname = objelement.name //takes in the name of the field var textvalue = objelement.value //takes in the value of the field // takes the string appended after the delimiter in the id attribute value var strchars = (strid.substring(strid.indexOf(DELIMITER)+1,strid.length)) for (j = 0; j < strchars.length; j++) //counter runs until it complets all the chars in the string { strchar = (strchars.substring(j,j+1)); //takes in the single charactor //alert(strchar) switch (strchar.toUpperCase()) //acts as select case statement { case EMAIL: //email validation if (textvalue != "") { if (CheckEmail(textvalue) == false) { alert('Please Enter Valid Email Id in Field : ') //+ elementname) setfocus(objelement) //sets focus on the field return } } break case CHARACTERS: //alerts if other then alfa characters are enterd if (textvalue != "") { if (OnlyCharacters(textvalue) == false) { alert('Only Characters are Valid in Field : "' + elementname) setfocus(objelement) return } } break case UPPERCASE: //alerts if other than upper case letters are entered if (textvalue != "") { if (OnlyUppercase(textvalue) == false) { alert('Only Uppercase Letters are valid in Field : "' + elementname) setfocus(objelement) return } } break case LOWERCASE: //alerts if other than lowercase letters are entered if (textvalue != "") { if (OnlyLowercase(textvalue) == false) { alert('Only Lowercase Letters are Valid in Field : "' + elementname) setfocus(objelement) return } } break case ALPHANUMERIC: //alerts if other than (A to Z and 0 to 9) are entered if (textvalue != "") { if (OnlyAlphanumeric(textvalue) == false) { alert('Only Alpha Numeric Letters are Valid in Field : "')// + elementname) setfocus(objelement) return } } break case NOSPECIALSYMBOLS: //alerts if any special symbols are entered if (textvalue != "") { if (NoSpecialSymbols(textvalue) == false) { alert('Special Symbols are Not Valid in Field : "')// + elementname) setfocus(objelement) return } } break case INTEGERS: //alerts if other than integers are entered if (textvalue != "") { if (OnlyIntegers(textvalue) == false) { alert('The value You Entered is not valid, Only Integers are Allowed in Field : "') //+ elementname) setfocus(objelement) return } } break case CHARLENGTH250: //alerts in case of length exceeding 250 characters if (Allow250charsonly(objelement) == false) { alert('The value You Entered is not valid, Only 250 characters are Allowed in Field : "' ) //+ elementname) setfocus(objelement) return } break case NOBLANKSASFIRSTCHAR: //alerts in case of blank spaces at the begining of the words if (textvalue != "") { if (NoBlanksasfirstchar(textvalue) == false) { alert('The value You Entered is not valid, Blank spaces are not Allowed in the the Field : "' ) //+ elementname) setfocus(objelement) return } } break case NOBLANKSINWORDS: //alerts in case of more than one space in the middle of the words if (textvalue != "") { if (NoBlanksinwords(textvalue) == false) { alert('The value You Entered is not valid, Blank spaces are not Allowed in the the Field : "' ) //+ elementname) setfocus(objelement) return } } break case BLANK: //alerts in case of blank input if (NoBlank(objelement) == false) { alert("Required Value is Missing in the Mandatory Field : ")//+ elementname) setfocus(objelement) return } break } } } //******************************************************************* function checkelement(objelement) //returns false if the element is de selected { if (objelement.checked == false) { return(false) } return(true) } //******************************************************************* function setfocus(objelement) //used to set the focus on the element on which validation is failed { objelement.focus() breakstatus = "true" //used to break the parent For loop } //******************************************************************** function validateValues(Inputval,AcceptCharacters, DenyCharacters) { //author: Sri Hari Raju //function to check the inputvalues against specified accept or denied characters //specify all the charectors you want to accept in acceptcharacters and all the charectors you want to deny in denycharactors //at a time you can give either acceptcharactors or denycharactors //acceptcharactors ex: validateValues(inputval,'abcdef','') gives false if any charector from inpuval is not there in acceptcharactors //denyedcharactors ex: validateValues(inputval,'','abcdef') gives false if any charector from inpuval exists in denycharactors for (var k = 0; k < Inputval.length; k++) //takes in every character of inputval string and iterates the loop for every charector { var char = (Inputval.substring(k,k+1)); //takes in the charector of string on after the other // If list of characters to accept has been specified if (AcceptCharacters != '') { if (AcceptCharacters.indexOf(char) < 0) //if the charector from inputval is not there in acceptcharecters then returns false return(false) } // Otherwise use the list of characters to deny if (DenyCharacters != '') { if (DenyCharacters.indexOf(char) > -1) //if the charector from inputval is there in deniedcharecters then returns false return(false) } } // Accept by default and returns true return(true) } //******************************************************************** function OnlyIntegers(inputval) //returs false in case of chars other than integers { return(validateValues(inputval,'0123456789','')); } //******************************************************************** function OnlyCharacters(inputval) //returns false in case of chars other than alfabets { return(validateValues(inputval,'ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvxyz ','')); } //******************************************************************** function NoBlank(objelement) //checks for blank and returns fale in case of blank value { if (objelement.value == "") { return(false); } return(true); } //******************************************************************** function NoBlanksasfirstchar(inputval) //checks for blank spaces in the begining of the word { if(inputval.substring(0,1) == ' ') { return(false); } return(true); } //****************************************************************** function NoBlanksinwords(inputval) //checks checks blank spaces in the middle of the words { for(var i = 0 ;i.,?;:"')); } //******************************************************************** function OnlyAlphanumeric(inputval) //returns false in case of chars other than below given string { return(validateValues(inputval,'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789','')); } //********************************************************************** function Allow250charsonly(objelement) //checks for the length of input value and returns false in case of length exceeding 250 characters { var characters = objelement.value if (characters.length > 250) { return(false); } return(true); }