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Display the password strength in javascript, and display the javascript password strength.

Source: Internet
Author: User
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Display the password strength in javascript, and display the javascript password strength.

Password strength and Chinese strength

Copy codeThe Code is as follows:
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">
<Html>
<Head>
<Base href = "<% = basePath %>">
<Title> My JSP 'a. jsp 'starting page </title>
<Meta http-equiv = "pragma" content = "no-cache">
<Meta http-equiv = "cache-control" content = "no-cache">
<Meta http-equiv = "expires" content = "0">
<Meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<Meta http-equiv = "description" content = "This is my page">
<Style type = "text/css">
* {Margin: 0px; padding: 0px ;}
. J_PasswordStatus {padding-bottom: 0px; height: 18px ;}
. Status-bar {margin: 0px; display: inline-block; width: 80px; height: 5px; padding: 1px; border: 1px solid #42BF26; background-color: white; vertical-align: middle; font-size: 0 ;}
. Status-bar span {background-color: #42BF26; height: 5px; display: inline-block ;}
</Style>
</Head>
<Body>
<Input type = "password" id = "pwd1" style = "float: left; margin-top: 5px;" onkeyup = "checkPassword ();"/>
<Div id = "p_PasswordStatus" class = "J_PasswordStatus"
Style = "display: none; width: 300px;">
<Span class = "trigger"> password strength: </span>
<Span class = "status-bar" style = "text-indent: 0px;">
<Span style = "line-height: 5px;"> </span>
</Span>
<Span class = "status-result"> </span>
</Div>
</Body>
</Html>
<Script type = "text/javascript" src = "jquery-1.7.2.min.js"> </script>
<Script type = "text/javascript">
Function checkPassword (){
Var pwd = $ ("# pwd1"). val ();
GPasswdStatus (pwd, 'P _ passwordstatus ');
}
Function gPasswdStatus (value, id ){
Var status = $ ("#" + id );
Var result = $ ("#" + id). find (". status-result") [0];
Var bar = $ ("#" + id). find (". status-bar span ");
If (value = ""){
Status.css ("display", "none ");
} Else {
Var score = gCheckPassword (value );
Bar.css ("width", score + "% ");
Var resultDesp = gGetResultDesp (score );
Result. innerHTML = resultDesp;
Status.css ("display", "block ");
}
}
/**
* Check the password strength and return the score
*
* @ Param {}
* Password
* @ Return {Number}
*/
Function gCheckPassword (password ){
Var _ score = 0;
If (! Password ){
Return 0
}
If (password. length <= 4 ){
_ Score + = 5
} Else {
If (password. length> = 5 & password. length <= 7 ){
_ Score + = 10
} Else {
If (password. length> = 8 ){
_ Score + = 25
}
}
}
Var _ UpperCount = (password. match (/[A-Z]/g) | []). length;
Var _ LowerCount = (password. match (/[a-z]/g) | []). length;
Var _ LowerUpperCount = _ UpperCount + _ LowerCount;
If (_ UpperCount & _ LowerCount ){
_ Score + = 20
} Else {
If (_ UpperCount | _ LowerCount ){
_ Score + = 10
}
}
Var _ NumberCount = (password. match (/[\ d]/g, "") | []). length;
If (_ NumberCount> 0 & _ NumberCount <= 2 ){
_ Score + = 10
} Else {
If (_ NumberCount> = 3 ){
_ Score + = 20
}
}
Var _ CharacterCount = (password. match (/[! @ # $ % ^ &*? _ \. \-~] /G) | []). length;
If (_ CharacterCount = 1 ){
_ Score + = 10
} Else {
If (_ CharacterCount> 1 ){
_ Score + = 25
}
}
If (_ NumberCount & (_ UpperCount & _ LowerCount)
& _ CharacterCount ){
_ Score + = 5
} Else {
If (_ NumberCount & _ LowerUpperCount & _ CharacterCount ){
_ Score + = 3
} Else {
If (_ NumberCount & _ LowerUpperCount ){
_ Score + = 2
}
}
}
Return _ score
}
/**
* Returns a Chinese prompt indicating the strength of the password Based on the password strength score
*
* @ Param {}
* Score
* @ Return {String}
*/
Function gGetResultDesp (score ){
If (score <= 5 ){
Return "\ u592a \ u77ed"
} Else {
If (score> 5 & score <20 ){
Return "\ u5f31"
} Else {
If (score> = 20 & score <60 ){
Return "\ u4e2d"
} Else {
If (score> = 60 ){
Return "\ u5f3a"
} Else {
Return ""
}
}
}
}
}
</Script>

The above is all the content shared in this article. I hope it will be helpful for you to master javascript.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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