注册时正则验证及提示demo

用到了layer插件，下载 https://layer.layui.com/ 在该连接下下载layer相关文件
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>注册demo：</title>
        <link rel="stylesheet" href="../css/layer.css" />
    </head>
    <body>
        <!--注册 -->
        <div class="passwannpas">
            <p>手机号：</p>
        </div>
        <div class="passwannpas">
            <input type="text" class="numbers" id="phonenumber" placeholder="请输手机号" />
            <span class="checkExistRong" id="checkExistPhone"></span>
        </div>

        <div class="passwannpas">
            <p>证件号码：</p>
        </div>
        <div class="passwannpas">
            <input type="text" class="phones" id="patientIdCard" placeholder="请输入证件号码" />
            <span class="checkExistRong" id="checkExistID"></span>
        </div>
    </body>

</html>
<script type="text/javascript" src="../js/jquery-2.1.1.min.js"></script>
<script type="text/javascript" src="../layerdate/js/layer.js"></script>
<script>
    /*注册*/
    userTel('#phonenumber', "#checkExistPhone"); //手机号判断phonenumber:输入框的id名，checkExistPhone：span提示
    userID('#patientIdCard', "#checkExistID"); //身份证判断
    // 验证手机号
    function isPhoneNo(phone) {
        var pattern = /^1[34578]d{9}$/;
        return pattern.test(phone);
    }
    /*手机号判断*/
    function userTel(inputid) {
        $(inputid).blur(function() {
            if($.trim($(inputid).val()).length == 0) {
                layer.msg('手机号不能为空');
            } else {
                if(isPhoneNo($.trim($(inputid).val())) == false && $.trim($(inputid).val()).length != 11) {
                    layer.msg('手机号格式错误');
                };

            }
        });
    };

    // 验证身份证
    function isCardNo(card) {
        var pattern = /(^d{15}$)|(^d{18}$)|(^d{17}(d|X|x)$)/;
        return pattern.test(card);
    }
    /*身份证判断*/
    function userID(inputid) {
        $(inputid).blur(function() {
            if($.trim($(inputid).val()).length == 0) {
                layer.msg('身份证号不能为空');
            } else {
                if(isCardNo($.trim($(inputid).val())) == false) {
                    layer.msg('身份证号输入格式不正确');
                }
            }
        });
    };
</script>