JS Regular expression//checksum is all composed of numbers function isdigit (s) {var patrn=/^[0-9]{1,20}$/; if (!patrn.exec (s)) return false return True}//Checksum Login Name: You can only enter 5-20 letters beginning with a letter, with numbers, "_", "." The string Java code function Isregisterusername (s) {var patrn=/^[a-za-z]{1} ([a-za-z0-9]|[. _]) {4,19}$/; if (!patrn.exec (s)) return false return True}//Verify user name: You can enter only 1-30 characters that begin with a letter string Java code function Istruename (s) {var patrn=/^[a-z a-z]{1,30}$/; if (!patrn.exec (s)) return false Return True}}//Verify password: Can only enter 6-20 letters, numbers, underscores
Copy Code code as follows:
function ispasswd (s)
{
var patrn=/^ (\w) {6,20}$/;
if (!patrn.exec (s)) return false
return True
}
Check ordinary telephone, fax number: You can "+" start, in addition to numbers, can contain "-"
Copy Code code as follows:
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.exec (s)) return false
return True
}
Check mobile phone Number: Must start with a number, in addition to the number, can contain "-"
Copy Code code as follows:
function Ismobil (s)
{
var patrn=/^[+]{0,1} (\d) {1,3}[]? ([-]? ((\d) | []) {1,12}) +$/;
if (!patrn.exec (s)) return false
return True
}
Check ZIP code
Copy Code code as follows:
function Ismobil (s)
{
var patrn=/^[+]{0,1} (\d) {1,3}[]? ([-]? ((\d) | []) {1,12}) +$/;
if (!patrn.exec (s)) return false
return True
}
Verify Search Keywords
Copy Code code as follows:
function Issearch (s)
{
var patrn=/^[^ ' ~!@#$%^&* () +=|\\\][\]\{\}:; ' \,.<>/?] {1} [^ ' ~!@$%^& () +=|\\\]
[\]\{\}:;' \,.<>?] {0,19}$/;
if (!patrn.exec (s)) return false
return True
}
function IsIP (s)//by zergling
{
var patrn=/^[0-9.] {1,20}$/;
if (!patrn.exec (s)) return false
return True
}
Regular expression 30-minute introductory tutorial
Regular expression base data
