正则expression式用于密码validation
任何人都可以帮我创build一个正则expression式来进行密码validation。
条件是“密码必须包含8个字符和至less一个数字，一个字母和一个独特的字符，如!#$%&? "
^.*(?=.{8,})(?=.*[a-zA-Z])(?=.*\d)(?=.*[!#$%&? "]).*$ --- ^.* : Start (?=.{8,}) : Length (?=.*[a-zA-Z]) : Letters (?=.*\d) : Digits (?=.*[!#$%&? "]) : Special characters .*$ : End
尝试这个
((?=.*\d)(?=.*[az])(?=.*[AZ])(?=.*[\W]).{6,20})
以上正则expression式的描述：
( # Start of group (?=.*\d) # must contains one digit from 0-9 (?=.*[az]) # must contains one lowercase characters (?=.*[\W]) # must contains at least one special character . # match anything with previous condition checking {8,20} # length at least 8 characters and maximum of 20 ) # End of group
“/ W”将增加可用于密码的字符的范围，并且坑可以更安全。
您可以很容易地达到每个个人需求（例如，最less8个字符： .{8,}将匹配8个或更多个字符）。
要合并它们，您可以使用“积极向前”将多个子expression式应用于相同的内容。 类似(?=.*\d.*).{8,}来匹配一个（或多个）数字与超前，以及8个或更多的字符。
所以：
（？=。* \ d *）（？=。* [A-ZA-Z]。*）（？=。* [！＃\ $％＆\？]。*）。{8，}
记住要转义元字符。
具有以下条件的密码：
- 至less1位数字
- 至less2个特殊字符
- 至less1个字母字符
-
没有空白
'use strict'; (function() { var foo = '3g^g$'; console.log(/^(?=.*\d)(?=(.*\W){2})(?=.*[a-zA-Z])(?!.*\s).{1,15}$/.test(foo)); /** * (?=.*\d) should contain at least 1 digit * (?=(.*\W){2}) should contain at least 2 special characters * (?=.*[a-zA-Z]) should contain at least 1 alphabetic character * (?!.*\s) should not contain any blank space */ })();
你可以使你自己的正则expression式的javascriptvalidation;
(/^ (?=.*\d) //should contain at least one digit (?=.*[az]) //should contain at least one lower case (?=.*[AZ]) //should contain at least one upper case [a-zA-Z0-9]{8,} //should contain at least 8 from the mentioned characters $/)
例如： – /^(?=.*\d)(?=.*[a-zA-Z])[a-zA-Z0-9]{7,}$/
