js密码强度显示

2015-10-26 14:11:00
admin
原创
591
摘要:js密码强度显示
<!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">密码强度: </span>
<span class="status-bar" style="text-indent: 0px;">
<span style="line-height: 5px;">&nbsp;&nbsp;</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");
}
}
/**
 * 检验密码强度并返回得分
 * 
 * @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
}
 /**
  * 根据密码强度得分返回密码强弱度中文提示
  * 
  * @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>
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