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/* @projectDescription jQuery Password Strength Plugin - A jQuery plugin to provide accessibility functions
 * @author Tane Piper (digitalspaghetti@gmail.com)
 * @version 2.0
 * @website: http://digitalspaghetti.me.uk/digitalspaghetti
 http://simplythebest.net/scripts/ajax/ajax_password_strength.html
 * @license MIT License: http://www.opensource.org/licenses/mit-license.php
 * 
 * === Changelog ===
 * Version 2.1 (18/05/2008)
 * Added a jQuery method to add a new rule: jQuery('input[@type=password]').pstrength.addRule(name, method, score, active)
 * Added a jQuery method to change a rule score: jQuery('input[@type=password]').pstrength.changeScore('one_number', 50);
 * Added a jQuery method to change a rules active state: jQuery('input[@type=password]').pstrength.ruleActive('one_number', false);
 * Hide the 'password to short' span if the password is more than the min chars
 * 
 * Version 2.0 (17/05/2008)
 * Completly re-wrote the plugin from scratch.  Plugin now features lamda functions for validation and
 * custom validation rules 
 * Plugin now exists in new digitalspaghetti. namespace to stop any conflits with other plugins.
 * Updated documentation
 * 
 * Version 1.4 (12/02/2008)
 * Added some improvments to i18n stuff from Raffael Luthiger.
 * Version 1.3 (02/01/2008)
 * Changing coding style to more OO
 * Added default messages object for i18n
 * Changed password length score to Math.pow (thanks to Keith Mashinter for this suggestion)
 * Version 1.2 (03/09/2007)
 * Added more options for colors and common words
 * Added common words checked to see if words like 'password' or 'qwerty' are being entered
 * Added minimum characters required for password
 * Re-worked scoring system to give better results
 * Version 1.1 (20/08/2007)
 * Changed code to be more jQuery-like
 * Version 1.0 (20/07/2007)
 * Initial version.
 
*/


// Create our namespaced object
/*global window */
/*global jQuery */
/*global digitalspaghetti*/
window.digitalspaghetti 
= window.digitalspaghetti || {};
digitalspaghetti.password 
= {    
    'defaults' : 
{
        'displayMinChar': 
true,
        'minChar': 
6,
        'minCharText': '',
        'colors': [
"#f00""#c06""#f60""#3c0""#3f0"],
        'scores': [
20304350],
        'verdicts':    ['弱', '一般', '较好', '很好', '极佳'],
        'raisePower': 
1.4,
        'debug': 
false
    }
,
    'ruleScores' : 
{
        'length': 
0,
        'lowercase': 
1,
        'uppercase': 
3,
        'one_number': 
3,
        'three_numbers': 
5,
        'one_special_char': 
3,
        'two_special_char': 
5,
        'upper_lower_combo': 
2,
        'letter_number_combo': 
2,
        'letter_number_char_combo': 
2
    }
,
    'rules' : 
{
        'length': 
true,
        'lowercase': 
true,
        'uppercase': 
true,
        'one_number': 
true,
        'three_numbers': 
true,
        'one_special_char': 
true,
        'two_special_char': 
true,
        'upper_lower_combo': 
true,
        'letter_number_combo': 
true,
        'letter_number_char_combo': 
true
    }
,
    'validationRules': 
{
        'length': 
function (word, score) {
            digitalspaghetti.password.tooShort 
= false;
            
var wordlen = word.length;
            
var lenScore = Math.pow(wordlen, digitalspaghetti.password.options.raisePower);
            
if (wordlen < digitalspaghetti.password.options.minChar) {
                lenScore 
= (lenScore - 100);
                digitalspaghetti.password.tooShort 
= true;
            }

            
return lenScore;
        }
,
        'lowercase': 
function (word, score) {
            
return word.match(/[a-z]/&& score;
        }
,
        'uppercase': 
function (word, score) {
            
return word.match(/[A-Z]/&& score;
        }
,
        'one_number': 
function (word, score) {
            
return word.match(/\d+/&& score;
        }
,
        'three_numbers': 
function (word, score) {
            
return word.match(/(.*[0-9].*[0-9].*[0-9])/&& score;
        }
,
        'one_special_char': 
function (word, score) {
            
return word.match(/.[!,@,#,$,%,\^,&,*,?,_,~]/&& score;
        }
,
        'two_special_char': 
function (word, score) {
            
return word.match(/(.*[!,@,#,$,%,\^,&,*,?,_,~].*[!,@,#,$,%,\^,&,*,?,_,~])/&& score;
        }
,
        'upper_lower_combo': 
function (word, score) {
            
return word.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/&& score;
        }
,
        'letter_number_combo': 
function (word, score) {
            
return word.match(/([a-zA-Z])/&& word.match(/([0-9])/&& score;
        }
,
        'letter_number_char_combo' : 
function (word, score) {
            
return word.match(/([a-zA-Z0-9].*[!,@,#,$,%,\^,&,*,?,_,~])|([!,@,#,$,%,\^,&,*,?,_,~].*[a-zA-Z0-9])/&& score;
        }

    }
,
    'attachWidget': 
function (element) {
        
var output = ['<div id="password-strength">'];
        
if (digitalspaghetti.password.options.displayMinChar && !digitalspaghetti.password.tooShort) {
            output.push('
<span class="password-min-char">+ digitalspaghetti.password.options.minCharText.replace('%d', digitalspaghetti.password.options.minChar) + '</span>');
        }

        output.push('
<span class="password-strength-bar"></span>');
        output.push('
</div>');
        output 
= output.join('');
        jQuery(element).after(output);
    }
,
    'debugOutput': 
function (element) {
        
if (typeof console.log === 'function') {
            console.log(digitalspaghetti.password);    
        }
 else {
            alert(digitalspaghetti.password);
        }

    }
,
    'addRule': 
function (name, method, score, active) {
        digitalspaghetti.password.rules[name] 
= active;
        digitalspaghetti.password.ruleScores[name] 
= score;
        digitalspaghetti.password.validationRules[name] 
= method;
        
return true;
    }
,
    'init': 
function (element, options) {
        digitalspaghetti.password.options 
= jQuery.extend({}, digitalspaghetti.password.defaults, options);
        digitalspaghetti.password.attachWidget(element);
        jQuery(element).keyup(
function () {
            digitalspaghetti.password.calculateScore(jQuery(
this).val());
        }
);
        
if (digitalspaghetti.password.options.debug) {
            digitalspaghetti.password.debugOutput();
        }

    }
,
    'calculateScore': 
function (word) {
        digitalspaghetti.password.totalscore 
= 0;
        digitalspaghetti.password.width 
= 0;
        
for (var key in digitalspaghetti.password.rules) if (digitalspaghetti.password.rules.hasOwnProperty(key)) {
            
if (digitalspaghetti.password.rules[key] === true{
                
var score = digitalspaghetti.password.ruleScores[key];
                
var result = digitalspaghetti.password.validationRules[key](word, score);
                
if (result) {
                    digitalspaghetti.password.totalscore 
+= result;
                }

            }

            
if (digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[0]) {
                digitalspaghetti.password.strColor 
= digitalspaghetti.password.options.colors[0];
                digitalspaghetti.password.strText 
= digitalspaghetti.password.options.verdicts[0];
                digitalspaghetti.password.width 
=  "3";
            }
 else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[0&& digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[1]) {
                digitalspaghetti.password.strColor 
= digitalspaghetti.password.options.colors[1];
                digitalspaghetti.password.strText 
= digitalspaghetti.password.options.verdicts[1];
                digitalspaghetti.password.width 
=  "6";
            }
 else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[1&& digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[2]) {
                digitalspaghetti.password.strColor 
= digitalspaghetti.password.options.colors[2];
                digitalspaghetti.password.strText 
= digitalspaghetti.password.options.verdicts[2];
                digitalspaghetti.password.width 
=  "9";
            }
 else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[2&& digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[3]) {
                digitalspaghetti.password.strColor 
= digitalspaghetti.password.options.colors[3];
                digitalspaghetti.password.strText 
= digitalspaghetti.password.options.verdicts[3];
                digitalspaghetti.password.width 
=  "12";
            }
 else {
                digitalspaghetti.password.strColor 
= digitalspaghetti.password.options.colors[4];
                digitalspaghetti.password.strText 
= digitalspaghetti.password.options.verdicts[4];
                digitalspaghetti.password.width 
=  "15";
            }

            jQuery('.password
-strength-bar').stop();
            
            
if (digitalspaghetti.password.options.displayMinChar && !digitalspaghetti.password.tooShort) {
                jQuery('.password
-min-char').hide();
            }
 else {
                jQuery('.password
-min-char').show();
            }

            
            jQuery('.password
-strength-bar').animate({opacity: 0.5}, 'fast', 'linear', function () {
                jQuery(
this).css({'display': 'block', 'background-color': digitalspaghetti.password.strColor, 'width': digitalspaghetti.password.width + "%"}).text(digitalspaghetti.password.strText);
                jQuery(
this).animate({opacity: 1}, 'fast', 'linear');
            }
);
        }

    }

}
;

jQuery.extend(jQuery.fn, 
{
    'pstrength': 
function (options) {
        
return this.each(function () {
            digitalspaghetti.password.init(
this, options);
        }
);
    }

}
);
jQuery.extend(jQuery.fn.pstrength, 
{
    'addRule': 
function (name, method, score, active) {
        digitalspaghetti.password.addRule(name, method, score, active);
        
return true;
    }
,
    'changeScore': 
function (rule, score) {
        digitalspaghetti.password.ruleScores[rule] 
= score;
        
return true;
    }
,
    'ruleActive': 
function (rule, active) {
        digitalspaghetti.password.rules[rule] 
= active;
        
return true;
    }

}
);
上述为jquery_passstrength.js
下面为测试代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquert-password-strength</title>
<script type="text/javascript" src="js/jquery-1.2.6.min.js"></script>  
<script type="text/javascript" src="js/digitalspaghetti.password.js"></script>
<script type="text/javascript">
$(
function() {
    $('#user_password').pstrength();
}
);
</script>
<style>
.pstrength-minchar 
{
font-size 
: 10px;
}

input 
{
    width
:180px;
    height
:12px;
    line-height
:12px;
    padding
:4px 0px;
    border
: #cfcfcf 1px solid;
    color
: #585858;
}

password-strength,.password-strength-bar 
{
    width
:300px;
}

</style>
</head>

<body>
密码:
<input type="password" id="user_password" name="user_password" />
</body>
</html>
============================================================
实现2:
=============================================================

<html>
<head>
<title>密码强度检测Demo</title>
<script type="text/javascript">
 function passwordTest(obj){
  var t=obj.value;
  var id=getResult(t);
  //定义对应的消息提示
  var msg=new Array(4);
  msg[0]="密码过短。";
  msg[1]="密码强度差。";
  msg[2]="密码强度良好。";
  msg[3]="密码强度高。";
  var sty=new Array(4);
  sty[0]=-45;
  sty[1]=-30;
  sty[2]=-15;
  sty[3]=0;
  var col = new Array(4);
  col[0] = "gray";
  col[1] = "#50AEDD";
  col[2] = "#FF8213";
  col[3] = "green";
  //设置显示效果
  var bImg="/img/pwdlen_dSIPeEGQWxfO.gif" //一张显示用的图片
  var sWidth=300;
  var sHeight=15;
  var Bobj=document.getElementById("nodetext");

  Bobj.style.fontSize="12px";
  Bobj.style.color=col[id];
  Bobj.style.width=sWidth + "px";
  Bobj.style.height=sHeight + "px";
  Bobj.style.lineHeight=sHeight + "px";
  Bobj.style.background="url(" + bImg + ") no-repeat left " + sty[id] + "px";
  Bobj.style.textIndent="20px";
  Bobj.innerHTML="检测提示:" + msg[id];
 }
 //定义检测函数,返回0/1/2/3分别代表无效/差/一般/强
 function getResult(s){
  if(s.length < 4){
   return 0;
  }
  var ls = 0;
  if (s.match(/[a-z]/ig)){
   ls++;
  }
  if (s.match(/[0-9]/ig)){
   ls++;
  }
   if (s.match(/(.[^a-z0-9])/ig)){
   ls++;
  }
  if (s.length < 6 && ls > 0){
   ls--;
  }
  return ls
 }
</script>
</head>
<body>
<form name="form1">
 <label for="pwd">用户密码</label>
 <input type="password" name="pwd" onKeyUp="passwordTest(this)" />
 <div id="nodetext"></div>
</form>
</body>
</html>

posted on 2010-12-30 14:47 David1228 阅读(2320) 评论(0)  编辑  收藏 所属分类: JQuery

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