jQuery实用密码强度检测

2019-11-19 17:21:19

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JQ实用密码强度检测

通过正则来判断验证密码强弱并通过替换提示图片进行显示。

素材图片，请自取：

html源码：

<table style="width:320px;margin:40px auto;">  <tr>   <th>密码</th>   <td><span class="tbl-txt"><input id="pass" class="input-style" size="30" maxlength="30" name="pass" type="text" /></span></td>  </tr>  <tr>    <th></th>     <td id="level" class="pw-strength">       <div class="pw-bar"></div>    <div class="pw-bar-on"></div>    <div class="pw-txt">    <span>弱</span>    <span>中</span>    <span>强</span>    </div>   </td>   </tr> </table>

css源码：

.tbl-txt{font-size:14px;}   .tbl-txt input{padding:0 5px; height:22px; line-height:22px; margin-bottom:6px;}   .pw-strength {clear: both;position: relative;top: 8px;width: 180px;}   .pw-bar{background: url(images/pwd-1.png) no-repeat; position:relative; top:1px;height: 14px;overflow: hidden;width: 179px;}   .pw-bar-on{background: url(images/pwd-2.png) no-repeat; width:0px; height:14px;position: absolute;top: 1px;left: 2px;transition: width .5s ease-in;-moz-transition: width .5s ease-in;-webkit-transition: width .5s ease-in;-o-transition: width .5s ease-in;}   .pw-weak .pw-defule{ width:0px;}   .pw-weak .pw-bar-on {width: 60px;}   .pw-medium .pw-bar-on {width: 120px;}   .pw-strong .pw-bar-on {width: 179px;}   .pw-txt {padding-top: 2px;width: 180px;overflow: hidden;}   .pw-txt span {color: #707070;float: left;font-size: 12px;text-align: center;width: 58px;}

javascript源码：

$(function(){  $('#pass').keyup(function () {   var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*//W).*$", "g");   var mediumRegex = new RegExp("^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");   var enoughRegex = new RegExp("(?=.{6,}).*", "g");     if (false == enoughRegex.test($(this).val())) {    $('#level').removeClass('pw-weak');    $('#level').removeClass('pw-medium');    $('#level').removeClass('pw-strong');    $('#level').addClass(' pw-defule');     //密码小于六位的时候，密码强度图片都为灰色   }   else if (strongRegex.test($(this).val())) {    $('#level').removeClass('pw-weak');    $('#level').removeClass('pw-medium');    $('#level').removeClass('pw-strong');    $('#level').addClass(' pw-strong');     //密码为八位及以上并且字母数字特殊字符三项都包括,强度最强   }   else if (mediumRegex.test($(this).val())) {    $('#level').removeClass('pw-weak');    $('#level').removeClass('pw-medium');    $('#level').removeClass('pw-strong');    $('#level').addClass(' pw-medium');     //密码为七位及以上并且字母、数字、特殊字符三项中有两项，强度是中等   }   else {    $('#level').removeClass('pw-weak');    $('#level').removeClass('pw-medium');    $('#level').removeClass('pw-strong');    $('#level').addClass('pw-weak');     //如果密码为6为及以下，就算字母、数字、特殊字符三项都包括，强度也是弱的   }   return true;  }); })

根据上述正则最终效果图如下：