email validation in javascript using regular expression

PHP email Regular expression validation, e-mail address regular expression The most common verification we encounter is email address verification. Common on the site. Various Web page

a subexpression that contains 4 optional branches, respectively, with a "|" To distinguish between the "|" in the regular. The priority is the lowest, where each branch matches 3 characters (one [] can only match one character, inside is optional meaning), that is, mobile phone number of the first 3 digits, then there are 8 digits to match, can be 0-9 of any character, so is "[0-9]{8}", {} The number in represents the number of characters that match

The regular expression (regular expression) describes a pattern of string matching that can be used to check whether a string contains a seed string, replace a matched substring, or remove a substring from a string that matches a certain condition. This article mainly introduces the PHP

Use the combination of the specific and functional methods, but also check the next Article JavaScript sample code for form validation using regular expressions Copy Code code as follows: Matching regular expressions for Chinese characters: [U4E00-U9FA5] Commentary: Matching Chinese is really a headache, wi

= [nspredicatepredicatewithformat:@ "selfmatches%@",cartyperegex]; return[cartestevaluatewithobject:cartype];} //User name + (BOOL) validateusername: (nsstring*) name{nsstring *usernameregex=@ "^[a-za-z0-9]{6,20}+$"; nspredicate* Usernamepredicate=[nspredicatepredicatewithformat:@ "selfmatches%@",userNameRegex]; BOOLB=[userNamePredicateevaluateWithObject:name]; Returnb;} //password + (BOOL) validatepassword: (nsstring*) password{nsstring *passwordregex=@ "^[a-za-z0-9]{6,20}+$"; nspredicate* pass

=@"^[A-Za-z0-9]{6,20}+$";NSPredicate*userNamePredicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",userNameRegex];BOOL B=[userNamePredicateevaluateWithObject:name];returnB;}//密码+(BOOL)validatePassword:(NSString*)passWord{NSString*passWordRegex=@"^[a-zA-Z0-9]{6,20}+$";NSPredicate*passWordPredicate=[NSPredicatepredicateWithFormat:@"SELFMATCHES%@",passWordRegex];return[passWordPredicateevaluateWithObject:passWord];}//昵称+(BOOL)validateNickname:(NSString*)nickname{NSString*nicknameRegex=@"^[\u4e

Copy the Code code as follows: Literally from the ABNF in rfc3986 (thanks to ' WCP ')function ValidateIPv6 ($IP){Return Preg_match ('/\a(?:(?:(?: [a-f0-9]{1,4}:) {6}::(?: [a-f0-9]{1,4}:) {5}(?: [a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {4}(?:(?: [a-f0-9]{1,4}:) {0,1}[a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {3}(?:(?: [a-f0-9]{1,4}:) {0,2}[a-f0-9]{1,4})?::(?: [a-f0-9]{1,4}:) {2}(?:(?: [a-f0-9]{1,4}:) {0,3}[a-f0-9]{1,4})?:: [a-f0-9]{1,4}:(?:(?: [a-f0-9]{1,4}:) {0,4}[a-f0-9]{1,4})?::)(?:[A-f0-9] {1,4}:[a

This cell phone number is the correct validation function can be said to be the latest support, which has a detailed description, no matter what the next increase in the number of sections we are very easy to modify a little bit. JavaScript phone number Regular expression validatio