JS- common regular expressions - password authentication

JS regular expressions

强：字母+数字+特殊字符 
 ^(?![a-zA-z]+$)(?!\d+$)(?![!@#$%^&*]+$)(?![a-zA-z\d]+$)(?![a-zA-z!@#$%^&*]+$)(?![\d!@#$%^&*]+$)[a-zA-Z\d!@#$%^&*]+$
   
    
In: Letters + numbers, letters + special characters, numbers, special characters +
     ^(?![a-zA-z]+$)(?!\d+$)(?![!@#$%^&*]+$)[a-zA-Z\d!@#$%^&*]+$

Weak: pure digital, pure letters, special characters pure
^(?:\d+|[a-zA-Z]+|[!@#$%^&*]+)$


// check whether the whole of digits

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

// check the login name: Enter only 5-20 begin with a letter, can take numbers, "_" string "."
function isRegisterUserName(s)  
{  
var patrn = / ^ [a-zA-Z] {1} ([a-zA-Z0-9] | [._]) {4,19} $ /;  
if (!patrn.exec(s)) return false
return true
}

function isRegisterUserName(s)
{
var patrn = / ^ [a-zA-Z] {1} ([a-zA-Z0-9] | [._]) {4,19} $ /;
if (!patrn.exec(s)) return false
return true
}


// check User Name: Enter only 1-30 string beginning with the letter
The Javascript code
function isTrueName(s)  
{  
var patrn = / ^ [a-zA-Z] {1,30} $ /;  
if (!patrn.exec(s)) return false
return true
}  
}}  

// check Password: Enter only 6-20 letters, numbers, underscores  
function isPasswd(s)  
{  
var patrn = / ^ (\ w) {6,20} $ /;  
if (!patrn.exec(s)) return false
return true
}  

// check ordinary telephone and fax numbers: You can "+" at the beginning, in addition to numbers, may contain "-"  
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 the phone number: You must start with a number, in addition to numbers, may contain "-"  
function isMobil(s)  
{  
var patrn = / ^ [+] {0,1} (\ d) {1,3} []? ([-]? ((\ d) | []) {1,12}) + $ /;  
if (!patrn.exec(s)) return false
return true
}  

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

// check keyword search  
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 Expressions
^ \\ d + $ // non-negative integer (integer + 0)  
^ [0-9] * [1-9] [0-9] * $ // positive integer   
^ ((- \\ d +) | (0 +)) $ // non-positive integer (negative integer + 0)   
^ - [0-9] * [1-9] [0-9] * $ // negative integer   
^ -? \\ d + $ // integer   
^ \\ d + (// non-negative floating point number (floating-point number n + 0)   
^(([0-9]+\\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\\.[0-9]+)|([0-9]*[1-9][0-9]*))$　  
// positive 浮点 number   
^ ((- \\ d + (// non-positive float (negative float + 0)   
^(-(([0-9]+\\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\\.[0-9]+)|([0-9]*[1-9][0-9]*)))$  
// 负浮 score   
^ (-? \\ d +) (// float   
^ [A-Za-z] + $ // string consisting of the 26 English letters   
^ [AZ] + $ // string of uppercase letters 26 composed of   
^ [Az] + $ // string of 26 lowercase letters consisting of   
^ [A-Za-z0-9] + $ // string of digits and letters of the English 26   
String ^ \\ w + $ // digital, 26 English letters or the underscore   
^ [\\ w -] + (// email address   
^ [A-zA-z] +: // (// url  
^ [A-Za-z0-9 _] * $

The full domain name matching regular expression:
[A-zA-Z0-9] [- a-zA-Z0-9] {0,62} (\. [A-zA-Z0-9] [- a-zA-Z0-9] {0,62 }) + \.

Reprinted from: https://www.cnblogs.com/bluesky1024/p/8609196.html