// 是否真实姓名／汉字
function hanzi( field, v ) {
    return !v || /^[\u4e00-\u9fa5]+$/.test( v );
}


// 是否是手机
function phone( field, v ) {
    return !v || /^0?(1[38][0-9]|15[0-35-9]|14[57]|17[013678])[0-9]{8}$/.test( v );
}

// 是否是身份证
function checkCard( idcard ) {

    if ( !idcard ) return true;     // 放过空值，验证规则严格分离
    if ( !/^[0-9xX]+$/.test(idcard) ) return false;
    if ( !( idcard.length === 18) ) return false;

    var area = {11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外"};

    var Y, JYM,ereg;
    var S, M;
    var idcard_array = idcard.split( "" );

    //area
    if ( area[ parseInt(idcard.substr( 0, 2),10) ] === null ) {
        return false;
    }

    //格式检验
    switch ( idcard.length ) {
        case 15:
            if ( (parseInt(idcard.substr( 6, 2 ),10) + 1900) % 4 === 0 ||
                ( (parseInt(idcard.substr(6, 2),10) + 1900) % 100 === 0 &&
                    (parseInt(idcard.substr(6, 2),10) + 1900) % 4 === 0 )
                ) {
                ereg = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性
            } else {
                ereg = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性
            }
            return ereg.test( idcard );
        case 18:

            //18位身份号码检测
            //出生日期的合法性检查
            //闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))
            //平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))

            if ( parseInt(idcard.substr(6,4),10) % 4 === 0 ||
                (parseInt(idcard.substr(6,4),10) % 100 === 0 && parseInt(idcard.substr(6,4),10) % 4 === 0 ) ) {
                ereg = /^[1-9][0-9]{5}(19|20)[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/;//闰年出生日期的合法性正则表达式
            } else {
                ereg = /^[1-9][0-9]{5}(19|20)[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/;//平年出生日期的合法性正则表达式
            }
            if ( ereg.test(idcard) ) {

                //测试出生日期的合法性
                //计算校验位
                S = (parseInt( idcard_array[0], 10 ) + parseInt( idcard_array[10], 10 )) * 7 +
                    (parseInt( idcard_array[1], 10 ) + parseInt( idcard_array[11], 10 )) * 9 +
                    (parseInt( idcard_array[2], 10 ) + parseInt( idcard_array[12], 10 )) * 10 +
                    (parseInt( idcard_array[3], 10 ) + parseInt( idcard_array[13], 10 )) * 5 +
                    (parseInt( idcard_array[4], 10 ) + parseInt( idcard_array[14], 10 )) * 8 +
                    (parseInt( idcard_array[5], 10 ) + parseInt( idcard_array[15], 10 )) * 4 +
                    (parseInt( idcard_array[6], 10 ) + parseInt( idcard_array[16], 10 )) * 2 +
                    parseInt( idcard_array[7], 10 ) +
                    parseInt( idcard_array[8], 10 ) * 6 +
                    parseInt( idcard_array[9], 10 ) * 3;
                Y = S % 11;
                M = "F";
                JYM = "10X98765432";
                M = JYM.substr( Y, 1 );  //判断校验位
                return M == idcard_array[17].toUpperCase();
            }
            else {
                return false;
            }
            break;
        default:
            return false;
    }
}

//如果是身份证，则判断身份证是否满16周岁
function checkCard16( idcard ) {
    var nowAge = 0;//当前年龄

    var birthYear = idcard.substring(6,10),
        birthMonth = idcard.substring(10,12),
        birthDay = idcard.substring(12,14),
        d = new Date(),
        nowYear = d.getFullYear(),
        nowMonth = d.getMonth() + 1,
        nowDay = d.getDate();

    var yearDiff = nowYear - birthYear, //年差
        monthDiff = nowMonth - birthMonth, //月差
        dayDiff = nowDay - birthDay; //日差

    nowAge = yearDiff;

    if((yearDiff > 0 && monthDiff < 0) || (yearDiff > 0 && monthDiff ==0 && dayDiff < 0)) {
        nowAge -= 1;
    }

    if(nowAge >= 16) {
        return true;
    }else {
        return false;
    }
}