密码强度验证代码

密码强度验证示例

 <input type="password" name="pass" id="pass" /> 
<span id="passstrength"></span> 
<script> 
        $('#pass').keyup(function(e) { 
             var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$", "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())) { 
                     $('#passstrength').attr('class','short'); 
                     $('#passstrength').html('太短了！'); 
             } else if (strongRegex.test($(this).val())) { 
                     $('#passstrength').attr('class','ok'); 
                     $('#passstrength').html('强！'); 
             } else if (mediumRegex.test($(this).val())) { 
                     $('#passstrength').attr('class','alert'); 
                     $('#passstrength').html('中！'); 
             } else { 
                     $('#passstrength').attr('class','error'); 
                     $('#passstrength').html('弱！'); 
             } 
             return true; 
        }); 
</script>