JS Regular expression verification account, mobile phone number, phone, and e-mail

JS Regular expression verification account, mobile phone number, phone, and e-mail

Effect Experience: http://keleyi.com/keleyi/phtml/jstexiao/15.htm

Verify that the account is valid for validation rules: Letters, numbers, underscores, letters beginning with 4-16 digits.

function CheckUser (str) {varRe=/^[a-za-z]\w{3, the}$/; if(Re.test (str)) {alert ("correct"); }Else{alert ("Error"); }}checkuser ("Jihua_cnblogs");//called

Verify your phone number
Validation rule: 11 digits, starting with 1.

function Checkmobile (str) {varRe= /^1\d{Ten}$/if(Re.test (str)) {alert ("correct"); } Else{alert ("Error"); }}checkmobile ('13800138000');//calledCheckmobile ('139888888889');//Error Example

Verify the phone number verification rule: Area code + number, area code starts with 0, 3-bit or 4-digit number consists of 7-bit or 8-digit numbers between the area code and the number can be no connector, or "-" connection such as 01088888888,010-88888888,0955-7777777

function Checkphone (str) {varRe= /^0\d{2,3}-?\d{7,8}$/; if(Re.test (str)) {alert ("correct"); }Else{alert ("Error"); }}checkphone ("09557777777");//called

Verify Mailbox
Validation rules: Leave your email address in the "first part @ Second part"
The first part: By letter, number, underline, short line "-", Dot "." Composition
Part two: For a domain name, the domain name consists of letters, numbers, short-term "-", the domain name suffix,
and the domain name suffix is generally. xxx or. xxx.xx, a domain name suffix is generally 2-4-bit, such as cn,com,net, now the domain name will be more than 4 bit

 function checkemail (str) { var  Span style= "color: #000000;" > re  =/^ (\w-*\.*) [email protected] (\w-?) + (\.\w{2 ,}) +$/if   (Re.test (str)) {alert (   correct  Span style= "color: #800000;"    > " );  else  {alert (  "  error  "    [email protected]  ); //  call  

JS Regular expression verification account, mobile phone number, phone, and e-mail