Posted in Javascript onApril 24, 2013
<head> <title></title> <script src="jquery-1.9.1.js" type="text/javascript"></script> <style type="text/css"> .qiang{background:url(/images/pas4.JPG) no-repeat;width:150px;height:40px;float:left;} .zhong{background:url(/images/pas3.JPG) no-repeat;width:150px;height:40px;float:left;} .ruo{background:url(/images/pas2.JPG) no-repeat;width:150px;height:40px;float:left;} .ruox{background:url(/images/pas1.JPG) no-repeat;width:150px;height:40px;float:left;} .div1css{float:left;width:200px;} </style> <script type="text/javascript"> $(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())) { $('#div2').addClass('ruox'); //$('#passstrength').html('小于六位的时候'); //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())) { $('#div2').removeClass('zhong'); $('#div2').addClass('qiang'); //$('#passstrength').html('强!'); //密码为八位及以上并且字母数字特殊字符三项都包括 } else if (mediumRegex.test($(this).val())) { $('#div2').removeClass('ruo'); $('#div2').addClass('zhong'); //$('#passstrength').html('中!'); //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 { $('#div2').removeClass('ruox'); $('#div2').addClass('ruo'); //$('#passstrength').html('弱!'); //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; }); }) </script> </head> <body> <div id="div1" class="div1css"> <input type="password" name="pass" id="pass" /></div> <div id="div2"><span id="passstrength"></span></div> </body>
jQuery判断密码强度实现思路及代码
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