Practical JS regular expressions (mobile phone number/IP regular expression/zip code regular expression/telephone number, etc.)_javascript skills

//Check whether it is composed entirely of numbers

Copy code The code is as follows:

function isDigit( s)
{
var patrn=/^[0-9]{1,20}$/;
if (!patrn.exec(s)) return false
return true
}

//Verify login name: You can only enter 5-20 character strings starting with letters, with numbers, "_", and "."

Copy code The code is as follows:

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: only 1-30 strings starting with letters can be entered

Copy Code The code is as follows:

function isTrueName(s)
{
var patrn=/^[a-zA-Z]{1,30 }$/;
if (!patrn.exec(s)) return false
return true
}

//Verification password: only 6-20 can be entered Letters, numbers, underscores

Copy code The code is as follows:

function isPasswd(s)
{
var patrn=/^(w){6,20}$/;
if (!patrn.exec(s)) return false
return true
}

//Verify ordinary telephone and fax numbers: it can start with " ", and in addition to numbers, it can contain "-"

Copy code The code is 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
}

//Verify mobile phone number: must start with a number. In addition to numbers, it can contain "-"

Copy code The code is as follows :

function isMobil(s)
{
var patrn=/^[ ]{0,1}(d){1,3}[ ]?([-]? ((d)|[ ]){1,12}) $/;
if (!patrn.exec(s)) return false
return true
}

//Verify postal code

Copy code The code is as follows:

function isPostalCode(s)
{
//var patrn=/^[a-zA-Z0-9]{3,12}$/;
var patrn=/^[a-zA-Z0-9 ]{3, 12}$/;
if (!patrn.exec(s)) return false
return true
}

//Verify search keywords

Copy code The code is as follows:

function isSearch(s)
{
var patrn=/^ [^`~!@#$%^&*() =|][]{}:;',.<>/?]{1}[^`~!@$%^&() =| ][]{}:;',.<>?]{0,19}$/;
if (!patrn.exec(s)) return false
return true
}

//Check whether the IP address is

Copy code The code is as follows:

function isIP(s) //by zergling
{
var patrn=/^[0-9.]{1,20}$/;
if (!patrn.exec(s)) return false
return true
}

Copy code The code is as follows:

"^d $" //음이 아닌 정수(양의 정수 0)
"^[0-9]*[1-9][0-9]*$" //양의 정수
"^((-d )|(0 ))$" //양수가 아닌 정수(음의 정수 0)
"^-[0-9]*[1-9][0-9] *$ " //음의 정수
"^-?d $" //정수
"^d (.d )?$" //음이 아닌 부동 소수점 수(양의 부동 소수점 수 0)
"^(( [0-9] .[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*.[ 0-9] ) |([0-9]*[1-9][0-9]*))$" //양수 부동 소수점 숫자
"^((-d (.d )?)| (0 (.0 ) ?))$" //양수가 아닌 부동 소수점 숫자 (음의 부동 소수점 숫자 0)
"^(-(([0-9] .[0-9]*[1- 9][0-9]*) |([0-9]*[1-9][0-9]*.[0-9] )|([0-9]*[1-9][0 -9]*)))$" //음수 부동 소수점 수
"^(-?d )(.d )?$" //부동 소수점 수
"^[A-Za-z] $ " //영문 26자로 구성된 문자열
"^[A-Z] $" //영문 대문자 26자로 구성된 문자열
"^[a-z] $" //영문 소문자 26자로 구성된 문자열 letter
"^[A-Za-z0-9] $" // 숫자와 영문 26자로 구성된 문자열
"^w $" // 숫자와 영문 26자, 밑줄로 구성된 문자열
"^w $" // 숫자와 영문 26자로 이루어진 문자열
🎜>"^[w-] (.[w-] )*@[w-] (.[w-] ) $"　　 //이메일 주소
"^[a-zA-z] ://( w (-w )*)(.(w (-w )*))*(?S*)?$" //url
"^[A-Za-z0-9_]*$"