Common JS verification functions

// Check whether it is composed of digits
Function isDigit (s)
{
Var patrn =/^ [0-9] {1, 20} $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Check Logon Name: You can enter only 5-20 strings starting with a letter, which can contain numbers, "_", and ".".
Function isRegisterUserName (s)
{
Var patrn =/^ [a-zA-Z] {1} ([a-zA-Z0-9] | [. _]) {} $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Check user name: only 1-30 strings starting with letters can be entered
Function isTrueName (s)
{
Var patrn =/^ [a-zA-Z] {1, 30} $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Password verification: only 6-20 letters, numbers, and underscores can be entered
Function isPasswd (s)
{
Var patrn =/^ (\ w) {6, 20} $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Verify the phone number and fax number. The phone number can start with "+" and contain "-" in addition to numbers.
Function isTel (s)
{
// Var patrn =/^ [+] {0, 1} (\ d) {1, 3} []? ([-]? (\ D) {1, 12}) + $ /;
Var patrn =/^ [+] {0, 1} (\ d) {1, 3} []? ([-]? (\ D) | []) {1, 12}) + $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Verify the mobile phone number. It must start with a number and can contain "-" in addition to a number.
Function isMobil (s)
{
Var patrn =/^ [+] {0, 1} (\ d) {1, 3} []? ([-]? (\ D) | []) {1, 12}) + $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Verify the zip code
Function isPostalCode (s)
{
// Var patrn =/^ [a-zA-Z0-9] {3, 12} $ /;
Var patrn =/^ [a-zA-Z0-9] {} $ /;
If (! Patrn.exe c (s) return false
Return true
}
// Verify the search keyword
Function isSearch (s)
{
Var patrn =/^ [^ '~! @ # $ % ^ & * () + = |\\] [\] \{\}:;\' \,. <>/?] {1} [^ '~! @ $ % ^ & () + =|\\] [\] \{\}:;\' \,. <>?] {0, 19} $ /;
If (! Patrn.exe c (s) return false
Return true
}
Function isIP (s) // by zergling
{
Var patrn =/^ [0-9.] {1, 20} $ /;
If (! Patrn.exe c (s) return false
Return true
}
/*************************************** **************************************** **
* FUNCTION: isBetween
* PARAMETERS: val AS any value
* Lo AS Lower limit to check
* Hi AS Higher limit to check
* Cballs: NOTHING
* RETURNS: TRUE if val is between lo and hi both transaction Sive, otherwise false.
***************
**************************************** **************************/
Function isBetween (val, lo, hi ){
If (val <lo) | (val> hi) {return (false );}
Else {return (true );}
}
/*************************************** **************************************** **
* FUNCTION: isDate checks a valid date
* PARAMETERS: theStr AS String
* Cballs: isBetween, isInt
* RETURNS: TRUE if theStr is a valid date otherwise false.
**************************************** **************************************** **/
Function isDate (theStr ){
Var the1st = theStr. indexOf ('-');
Var the2nd = theStr. lastIndexOf ('-');
If (the1st = the2nd) {return (false );}
Else {
Var y = theStr. substring (0, the1st );
Var m = theStr. substring (the1st + 1, the2nd );
Var d = theStr. substring (the2nd + 1, theStr. length );
Var maxDays = 31;
If (isInt (m) = false | isInt (d) = false | isInt (y) = false ){
Return (false );}
Else if (y. length <4) {return (false );}
Else if (! IsBetween (m, 1, 12) {return (false );}
Else if (m = 4 | m = 6 | m = 9 | m = 11) maxDays = 30;
Else if (m = 2 ){
If (y % 4> 0) maxDays = 28;
Else if (y % 100 = 0 & y % 400> 0) maxDays = 28;
Else maxDays = 29;
}
If (isBetween (d, 1, maxDays) = false) {return (false );}
Else {return (true );}
}
}
/*************************************** **************************************** **
* FUNCTION: isEuDate checks a valid date in British format
* PARAMETERS: theStr AS String
* Cballs: isBetween, isInt
* RETURNS: TRUE if theStr is a valid date otherwise false.
**************************************** **************************************** **/
Function isEuDate (theStr ){
If (isBetween (theStr. length, 8, 10) = false) {return (false );}
Else {
Var the1st = theStr. indexOf ('/');
Var the2nd = theStr. lastIndexOf ('/');
If (the1st = the2nd) {return (false );}
Else {
Var m = theStr. substring (the1st + 1, the2nd );
Var d = theStr. substring (0, the1st );
Var y = theStr. substring (the2nd + 1, theStr. length );
Var maxDays = 31;
If (isInt (m) = false | isInt (d) = false | isInt (y) = false ){
Return (false );}
Else if (y. length <4) {return (false );}
Else if (isBetween (m, 1, 12) = false) {return (false );}
Else if (m = 4 | m = 6 | m = 9 | m = 11) maxDays = 30;
Else if (m = 2 ){
If (y % 4> 0) maxDays = 28;
Else if (y % 100 = 0 & y % 400> 0) maxDays = 28;
Else maxDays = 29;
}
If (isBetween (d, 1, maxDays) = false) {return (false );}
Else {return (true );}
}
}
}
/*************************************** **************************************** *
* FUNCTION: Compare Date! Which is the latest!
* PARAMETERS: lessDate, moreDate AS String
* Cballs: isDate, isBetween
* RETURNS: TRUE if lessDate <moreDate
**************************************** **************************************** */
Function isComdate (lessDate, moreDate)
{
If (! IsDate (lessDate) {return (false );}
If (! IsDate (moreDate) {return (false );}
Var less1st = lessDate. indexOf ('-');
Var less2nd = lessDate. lastIndexOf ('-');
Var more1st = moreDate. indexOf ('-');
Var more2nd = moreDate. lastIndexOf ('-');
Var lessy = lessDate. substrin (0, less1st );
Var lessm = lessDate. substring (less1st + 1, less2nd );
Var lessd = lessDate. substring (less2nd + 1, lessDate. length );
Var morey = moreDate. substring (0, more1st );
Var morem = moreDate. substring (more1st + 1, more2nd );
Var mored = moreDate. substring (more2nd + 1, moreDate. length );
Var Date1 = new Date (lessy, lessm, lessd );
Var Date2 = new Date (morey, morem, mored );
If (Date1> Date2) {return (false );}
Return (true );
}
/*************************************** **************************************** **
* FUNCTION isEmpty checks if the parameter is empty or null
* PARAMETER str AS String
**************************************** **************************************** **/
Function isEmpty (str ){
If (str = null) | (str. length = 0) return true;
Else return (false );
}
/*************************************** **************************************** **
* FUNCTION: isInt
* PARAMETER: theStr AS String
* RETURNS: TRUE if the passed parameter is an integer, otherwise FALSE
* Cballs: isDigit
**************************************** **************************************** **/
Function isInt (theStr ){
Var flag = true;
If (isEmpty (theStr) {flag = false ;}
Else
{For (var I = 0; I <theStr. length; I ++ ){
If (isDigit (theStr. substring (I, I + 1) = false ){
Flag = false; break;
}
}
}
Return (flag );
}
/*************************************** **************************************** **
* FUNCTION: isReal
* PARAMETER: heStr AS String
DecLen AS Integer (how many digits after period)
* RETURNS: TRUE if theStr is a float, otherwise FALSE
* Cballs: isInt
**************************************** **************************************** **/
Function isReal (theStr, decLen ){
Var dot1st = theStr. indexOf ('.');
Var dot2nd = theStr. lastIndexOf ('.');
Var K = true;
If (isEmpty (theStr) return false;
If (dot1st =-1 ){
If (! IsInt (theStr) return (false );
Else return (true );
}
Else if (dot1st! = Dot2nd) return (false );
Else if (dot1st = 0) return (false );
Else {
Var intPart = theStr. substring (0, dot1st );
Var decPart = theStr. substring (dot2nd + 1 );
If (decPart. length> decLen) return (false );
Else if (! IsInt (intPart) |! IsInt (decPart) return (false );
Else if (isEmpty (decPart) return (false );
Else return (true );
}
}
/*************************************** **************************************** **
* FUNCTION: isEmail
* PARAMETER: String (Email Address)
* RETURNS: TRUE if the String is a valid Email address
* FALSE if the passed string is not a valid Email Address
* Email format: AnyName @ EmailServer e. g; webmaster@hotmail.com
* @ Sign can appear only once in the email address.
**************************************** **************************************** */
Function isEmail (theStr ){
Var atIndex = theStr. indexOf ('@');
Var dotIndex = theStr. indexOf ('.', atIndex );
Var flag = true;
TheSub = theStr. substring (0, dotIndex + 1)
If (atIndex <1) | (atIndex! = TheStr. lastIndexOf ('@') | (dotIndex <atIndex + 2) | (theStr. length <= theSub. length ))
{Return (false );}
Else {return (true );}
}
/*************************************** **************************************** **
* FUNCTION: newWindow
* PARAMETERS: doc-> Document to open in the new window
Hite-> Height of the new window
Wide-> Width of the new window
Bars-> 1-Scrll bars = YES 0-Scroll Bars = NO
Resize-> 1-Resizable = YES 0-Resizable = NO
* Cballs: NONE
* RETURNS: New window instance
**************************************** **************************************** **/
Function newWindow (doc, hite, wide, bars, resize ){
Var winNew = "_ blank ";
Var pt = "toolbar = 0, location = 0, directories = 0, status = 0, menubar = 0 ,";
Opt + = ("scrollbars =" + bars + ",");
Opt + = ("resizable =" + resize + ",");
Opt + = ("width =" + wide + ",");
Opt + = ("height =" + hite );
WinHandle = window. open (doc, winNew, opt );
Return;
}
/*************************************** **************************************** **
* FUNCTION: DecimalFormat
* PARAMETERS: paramValue-> Field value
* Cballs: NONE
* RETURNS: Formated string
**************************************** **************************************** **/
Function DecimalFormat (paramValue ){
Var intPart = parseInt (paramValue );
Var decPart = parseFloat (paramValue)-intPart;
Str = "";
If (decPart = 0) | (decPart = null) str + = (intPart + ". 00 ");
Else str + = (intPart + decPart );
Return (str );
}
"^ \ D + $" // non-negative integer (positive integer + 0)
"^ [0-9] * [1-9] [0-9] * $" // positive integer
"^ (-\ D +) | (0 +) $" // non-positive integer (negative integer + 0)
"^-[0-9] * [1-9] [0-9] * $" // negative integer
"^ -? \ D + $ "// integer
"^ \ D + (\. \ d + )? $ "// Non-negative floating point number (Positive floating point number + 0)
"^ ([0-9] + \\. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * \. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ "// Positive floating point number
"^ (-\ D + (\. \ d + )?) | (0 + (\. 0 + )?)) $ "// Non-Positive floating point number (negative floating point number + 0)
"^ (-([0-9] + \\. [0-9] * [1-9] [0-9] *) | ([0-9] * [1-9] [0-9] * \. [0-9] +) | ([0-9] * [1-9] [0-9] *) $ "// negative floating point number
"^ (-? \ D +) (\. \ d + )? $ "// Floating point number
"^ [A-Za-z] + $" // A string consisting of 26 English letters
"^ [A-Z] + $" // a string consisting of 26 uppercase letters
"^ [A-z] + $" // a string consisting of 26 lowercase letters
"^ [A-Za-z0-9] + $" // string consisting of digits and 26 letters
"^ \ W + $" // a string consisting of a number, 26 English letters, or underscores
"^ [\ W-] + (\\. [\ w-] +) * @ [\ w-] + (\\. [\ w-] +) + $ "// email address
"^ [A-zA-z] +: // (\ w + (-\ w + )*)(\\. (\ w + (-\ w + )*))*(\\? \ S *)? $ "// Url