The most comprehensive JavaScript Form Verification

The most comprehensive JavaScript Form Verification

 

Comparison of Two dates

 

/*
Purpose: Check whether the start date is less than or equal to the end date.
Input:
S: String Start Date Format: 2001-5-4

E: String End Date Format: 2002-5-4
Return Value:
If the start date is less than or equal to the end date, true is returned. Otherwise, false is returned.
*/

Function data_compare (s, e)
{
Var arr = s. split (-);
Var starttime = new Date (arr [0], arr [1], arr [2]);...

More date comparison information

Blank or all spaces

 

/*
Purpose: Check whether the input string is null or all are spaces.
Input: str
Return Value:
If all values are null, true is returned. Otherwise, false is returned.
*/
Function isNull (str ){
If (str =) return true;
Var regu = ^ [] + $;

.....

More blank or all space information

Determine whether it is a date

 

/*
Purpose: determine whether it is a date.
Input: date; matched format:

Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/

Function isDate (str ){
If (isNull (str) return false;
Var r = str. match (/^ (d {4}) (-|/) (d {1, 2}) (-|/) (d {1, 2}) $ /);
If (r = null) return false;
Var d = new Date (r [1], r [3]-1, r [5]);
...

More information about whether to determine the date

Letter/digit underline

 

/*
Purpose: Check whether the input string is composed of English letters, numbers, and underscores (_).
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isNumberOr_Letter (s) {// determines whether it is a number or letter
Var regu = ^ [0-9a-zA-Z _] + $;
Var re = new RegExp (regu );
If (re. test (s ))...

More letters, numbers, and underscores

Character 1 starts with string 2

 

/*
Purpose: whether character 1 starts with string 2
Input: str1: string; str2: contained string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isFirstMatch (str1, str2 ){
Var index = str1.indexOf (str2 );
If (index = 0) return true;
Return false;
}

More Character 1 starts with string 2

Character 1 ends with string 2

 

/*
Purpose: whether character 1 ends with string 2
Input: str1: string; str2: contained string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isLastMatch (str1, str2 ){
Var index = str1.lastIndexOf (str2 );
If (str1.length = index + str2.length) return true;
Return false;
}

More Character 1 ends with string 2

Character 1 contains string 2

 

/*
Purpose: character 1 is a string containing 2
Input: str1: string; str2: contained string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isMatch (str1, str2 ){
Var index = str1.indexOf (str2 );
If (index =-1) return false;
Return true;
}

More Character 1 contains string 2 Information

Email or not

 

/*
Purpose: Check whether the value of the input object complies with the E-Mail format.
Input: str string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isEmail (str ){
Var myReg =/^ [-_ A-Za-z0-9] + @ ([_ A-Za-z0-9] +.) + [A-Za-z0-9] {2, 3} $ /;
If (myReg. test (str) return true;
Return false;
}

More email information?

Is it a mobile phone number?

 

/*
Purpose: Check whether the entered mobile phone number is correct.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function checkMobile (s ){
Var regu =/^ [1] [0-9] [0-9] {9} $ /;
Var re = new RegExp (regu );
If (re. test (s ))....

Whether it is a mobile phone number or not

Digit or not

 

/*
Purpose: Check whether the input string is a number.
Input:
Str: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/

Function isNumber (str)
{
Var reg =/^ d + $ /;
If (reg. test (str ))...

Whether it is a number or not

Time or not

 

/*
Purpose: Check whether the input string conforms to the time format.
Input:
Time: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isTime (time ){
Var regex =/^ [0-2] {1} [0-9] {1}: [0-5] {1} [0-9] {1 }: [0-5] {1} [0-9] {1} $ /;
If (! Regex. test (time )){
Return false;
}....

More time information?

Is it a positive integer?

 

/*
Purpose: Check whether the input string conforms to the positive integer format.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isNumber (s ){
Var regu = ^ [0-9] + $;
Var re = new RegExp (regu );
If (s. search (re )! =-1 )...

More positive integer Information

Is it a phone number?

 

/*
Purpose: Check whether the input string meets the Chinese fixed-line or fax format.
Input:
S: string format, for example, 020-87110252
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/

Function isTel (s ){
Var reg =/^ (0d {2, 3 })-)? (D {7, 8}) (-(d {3 ,}))? $ /;
If (! Reg. test (s ))...

Whether the phone number is used

Port Number?

 

/*
Purpose: Check whether the value of the input object conforms to the port number format.
Input: str string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isPort (str ){
Return (isNumber (str) & str <65536 );
}

More port number information

ID number?

 

/*
Purpose: Check whether the input string meets the ID card format
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/

Function isIDno (strIDno)
{
Var aCity = {11: Beijing, 12: Tianjin, 13: Hebei, 14: Shanxi, 15: Inner Mongolia, 21: Liaoning, 22: Jilin, 23: Heilongjiang, 31: Shanghai, 32: Jiang ....

For more information, see ID card numbers.

Is it a zip code?

 

/*
Purpose: Check whether the input string conforms to the zip code format.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/

Function isZipcode (str)
{
Var reg =/^ d + $ /;
If (! Reg. test (str ))...

Is it a zip code?

Is it an amount?

 

/*
Purpose: Check whether the input string meets the amount format
The format is defined as a positive number with decimal places. A maximum of three decimal places can be entered.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isMoney (s ){
Var regu = ^ [0-9] + [.] [0-9] {0, 3} $;
Var re = new RegExp (regu );
If (re. test (s ))...

More information about whether it is an amount

Whether it is only Chinese Characters

 

/*
Purpose: Check whether the input string is composed of only Chinese characters.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/

Function isZh (str ){
Var reg =/^ [1-Snapshot] + $ /;
If (reg. test (str ))...

More Chinese character information?

Whether it is an integer

 

/*
Purpose: Check whether the value of the input object conforms to the integer format.
Input: str string
Return: If the verification succeeds, true is returned; otherwise, false is returned.
*/
Function isInteger (str ){
Var regu =/^ [-] {0, 1} [0-9] {1,} $ /;
Return regu. test (str );
}

More integer Information

Verify IP Address

 

/*
Purpose: Verify the IP address format.
Input: strIP: IP Address
Return: If the verification succeeds, true is returned; otherwise, false is returned;
*/
Function isIP (strIP ){
If (isNull (strIP) return false;
Var re =/^ (d +). (d +) $/g // Regular Expression matching IP addresses
If (re. test (strIP )){
If (RegExp. $1

More IP address verification information

Chinese characters, letters, and numbers

 

/*
Purpose: Check whether the input string consists of only Chinese characters, letters, and numbers.
Input:
Value: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isChinaOrNumbOrLett (s) {// determines whether it is composed of Chinese characters, letters, and numbers.
Var regu = ^ [0-9a-zA-Z-region] + $;
Var re = new RegExp (regu );
If (re. test (s ))...

More Chinese characters, letters, and numbers

English numerals

 

/*
Purpose: Check whether the input string consists of only English letters and numbers.
Input:
S: String
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isNumberOrLetter (s) {// determines whether it is a number or letter
Var regu = ^ [0-9a-zA-Z] + $;
Var re = new RegExp (regu );
If (re. test (s ))...

More English numbers