js验证密码的正则表达式。

JavaScript020

js验证密码的正则表达式。,第1张

完整的js正则表达式:

//强:字母+数字+特殊字符

^(?![a-zA-z]+$)(?!\d+$)(?![!@#$%^&*]+$)(?![a-zA-z\d]+$)(?![a-zA-z!@#$%^&*]+$)(?![\d!@#$%^&*]+$)[a-zA-Z\d!@#$%^&*]+$    

//中:字母+数字,字母+特殊字符,数字+特殊字符

^(?![a-zA-z]+$)(?!\d+$)(?![!@#$%^&*]+$)[a-zA-Z\d!@#$%^&*]+$

//弱:纯数字,纯字母,纯特殊字符

^(?:\d+|[a-zA-Z]+|[!@#$%^&*]+)$

//校验是否全由数字组成function isDigit(s){var patrn=/^[0-9]{1,20}$/if (!patrn.exec(s)) return false

return true

}//校验登录名:只能输入5-20个以字母开头、可带数字、“_”、“.”的字串function isRegisterUserName(s){var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,19}$/if (!patrn.exec(s)) return falsereturn true}function isRegisterUserName(s){var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,19}$/if (!patrn.exec(s)) return false

return true}

//校验用户姓名:只能输入1-30个以字母开头的字串Javascript代码function isTrueName(s){var patrn=/^[a-zA-Z]{1,30}$/if (!patrn.exec(s)) return falsereturn true}}}

//校验密码:只能输入6-20个字母、数字、下划线

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

//校验普通电话、传真号码:可以“+”开头,除数字外,可含有“-”

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 falsereturn true}

//校验手机号码:必须以数字开头,除数字外,可含有“-”

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

//校验邮政编码

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

//校验搜索关键字

function isSearch(s){var patrn=/^[^`~!@#$%^&*()+=|\\\][\]\{\}:'\,.<>/?]{1}[^`~!@$%^&()+=|\\\][\]\{\}:'\,.<>?]{0,19}$/if (!patrn.exec(s)) return falsereturn true}function isIP(s) //by zergling{var patrn=/^[0-9.]{1,20}$/if (!patrn.exec(s)) return falsereturn true}

<p>

密码<input type="password" id=“pwd”>

</p>

验证密码就:

var pwd=docment.getElementById("pwd").value //获取密码框里的元素

var reg="这里写你要求密码的正则表达式格式";

//例如密码要求5-10位字母数字下划线,那么正则式就是 var reg=/^\w{5,10}$/(记住^开始和$不要漏了)

if(reg.test(pwd)){

return true

)