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JS password Strength Verification (compatible with IE, Firefox, and Google)

Source: Internet
Author: User
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Approximate style:


Source code:
Copy codeThe Code is as follows:
// ============================ HTML page ============================
<Body onload = "InitCss ();">
<Form>
<Div>
<Table>
<Tr>
<Td>
Password:
</Td>
<Td>
<Input id = "txtPassword" type = "password" style = "width: 130px;" maxlength = "16" onfocus = "InitCss ();"
Onblur = "ValidateInput ('Password', this. value)" onkeydown = "validatePwdStrong (this. value);"/>
</Td>
<Td>
<Div id = "tipPosition">
</Div>
</Td>
</Tr>
<Tr>
<Td>
</Td>
<Td>
<Table id = "pwdStrong_color">
<Tr>
<Td id = "pwdStrong_1">
</Td>
<Td id = "pwdStrong_2">
</Td>
<Td id = "pwdStrong_3">
</Td>
<Td id = "pwdStrong_4">
</Td>
</Tr>
</Table>
</Td>
<Td>
<Div id = "pwdStrong_text">
</Div>
</Td>
</Tr>
</Table>
</Div>
</Form>
</Body>

JS files
Copy codeThe Code is as follows:
// Replace document. getElementById with $
Var $ = function (v) {return document. getElementById (v );}

/*************************************** ********************** ********************************/
Function ValidateInput (element, value ){
// Verify the password
If (element = "password "){
If (value. toString (). length <6 ){
$ ('Tidposition'). className = 'error ';
$ ('Tidposition'). innerHTML = "Incorrect password. The password length is too small. ";
Return;
}
Else {
$ ('Tidposition'). className = 'success ';
$ ('Tidposition'). innerHTML = "is entered correctly. ";
}
}
}
/* = ========= Begin ========================================= ========= */
// Password initialization Style
Function InitCss (){
$ ('Tidposition'). className = 'title ';
$ ('Tidposition'). innerHTML = "minimum length: 6. Maximum length: 16. ";
}

/* ====================================== Password strength ====== ========= Begin =========================================== ======= */

Function Evaluate (word ){
Return word. replace (/^ (? :( [A-z]) | ([A-Z]) | ([0-9]) | (.)) {5 ,}| (.) + $/g, "$1 $2 $3 $4 $5 "). length;
}

Function validatePwdStrong (value ){
Var pwd = {
Color: ['# e6eaed',' # AC0035 ',' # FFCC33 ',' # 639BCC ',' #246626 '],
Text: ['too short ', 'weak', 'General ', 'good', 'excellent ']
};
Function colorInit (){
$ ('Pwdstrong _ 1'). style. backgroundColor = pwd. color [0];
$ ('Pwdstrong _ 2'). style. backgroundColor = pwd. color [0];
$ ('Pwdstrong _ 3'). style. backgroundColor = pwd. color [0];
$ ('Pwdstrong _ 4'). style. backgroundColor = pwd. color [0];
}
If (Evaluate (value) = 1 ){
ColorInit ();
$ ('Pwdstrong _ 1'). style. backgroundColor = pwd. color [1];
$ ('Pwdstrong _ text'). innerHTML = pwd. text [1];
$ ('Pwdstrong _ text'). style. color = pwd. color [1];
}
Else if (Evaluate (value) = 2 ){
ColorInit ();
$ ('Pwdstrong _ 1'). style. backgroundColor = pwd. color [2];
$ ('Pwdstrong _ 2'). style. backgroundColor = pwd. color [2];
$ ('Pwdstrong _ text'). innerHTML = pwd. text [2];
$ ('Pwdstrong _ text'). style. color = pwd. color [2];
}
Else if (Evaluate (value) = 3 ){
ColorInit ();
$ ('Pwdstrong _ 1'). style. backgroundColor = pwd. color [3];
$ ('Pwdstrong _ 2'). style. backgroundColor = pwd. color [3];
$ ('Pwdstrong _ 3'). style. backgroundColor = pwd. color [3];
$ ('Pwdstrong _ text'). innerHTML = pwd. text [3];
$ ('Pwdstrong _ text'). style. color = pwd. color [3];
}
Else if (Evaluate (value) = 4 ){
$ ('Pwdstrong _ 1'). style. backgroundColor = pwd. color [4];
$ ('Pwdstrong _ 2'). style. backgroundColor = pwd. color [4];
$ ('Pwdstrong _ 3'). style. backgroundColor = pwd. color [4];
$ ('Pwdstrong _ 4'). style. backgroundColor = pwd. color [4];
$ ('Pwdstrong _ text'). innerHTML = pwd. text [4];
$ ('Pwdstrong _ text'). style. color = pwd. color [4];
}
}



// ========================== CSS file ==============================
Copy codeThe Code is as follows:
Body
{
Font: 13px;
}
/* Password verification prompt CSS -------------------------------- start --------------------------------*/
# TipPosition
{
Width: 400px;
Height: 16px;
Line-height: 18px;
Padding: 2px 30px;
}
. Tip
{
Background: # E6F2FF url (images/register_tip.png) no-repeat 10px center;
Border: 1px #0E5863 dashed;
Color: #0E5863;
}
. Error
{
Background: # FBECDF url (images/register_error.png) no-repeat 10px center;
Border: 1px Red dashed;
Color: #6D3737;
}
. Success
{
Background: # D6FCD2 url (images/register_success.png) no-repeat 10px center;
Border: 1px #2F5D36 dashed;
Color: # 3D934A;
}
/* Password strength CSS -------------------------------- start --------------------------------*/
# PwdStrong_color
{
Width: 136px;
Height: 3px;
Border: 0px;
Border-collapse: collapse;
Border-spacing: 0;
Background: # E6EAED;
Margin-top: 5px;
}
# PwdStrong_color td
{
Padding: 0px;
Width: 44px;/* If the td width is not added, Google Chrome will not display normally */
}
# PwdStrong_text
{
Font: 12px;
}

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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