function isEmail(str){

    var reg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/;

    if(!reg.test(str))

    {

        alert('请输入有效的邮箱！');

        return false;

    }else{

        return true;

    }

}

function validatemobile(mobile)

{

    if(mobile.length==0)

    {

        alert('请输入手机号码！');

        return false;

    }

    if(mobile.length!=11)

    {

        alert('请输入有效的手机号码！');

        return false;

    }

    var myreg = /^(((13[0-9]{1})|(14[0-9]{1})|(15[0-9]{1})|(17[0-9]{1})|(18[0-9]{1})|(19[0-9]{1}))+\d{8})$/;

    if(!myreg.test(mobile))

    {

        alert('请输入有效的手机号码！');

        return false;

    }else{

        return true;

    }

}

function checkNumber(id){

    var reg = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;

    if (reg.test(id) === false) {

        alert("身份证输入不合法");

        return false;

    }else{

        return true;

    }

}

function IdentityCodeValid(code) {

    var city={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 tip = "";

    var pass= true;

    if(!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[12])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)){

        tip = "身份证号格式错误";

        pass = false;

    }

    else if(!city[code.substr(0,2)]){

        tip = "地址编码错误";

        pass = false;

    }

    else{

        //18位身份证需要验证最后一位校验位

        if(code.length == 18){

            code = code.split('');

            //∑(ai×Wi)(mod 11)

            //加权因子

            var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];

            //校验位

            var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ];

            var sum = 0;

            var ai = 0;

            var wi = 0;

            for (var i = 0; i < 17; i++)

            {

                ai = code[i];

                wi = factor[i];

                sum += ai * wi;

            }

            var last = parity[sum % 11];

            if(parity[sum % 11] != code[17]){

                console.log(last);

                tip = "校验位错误";

                pass =false;

            }

        }

    }

    if(!pass) groy(tip);

    return pass;

}

function IsHKID(str) {

    var strValidChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    // basic check length

    if (str.length < 8)

        return false;

    // handling bracket

    if (str.charAt(str.length-3) == '(' && str.charAt(str.length-1) == ')')

        str = str.substring(0, str.length - 3) + str.charAt(str.length -2);

    // convert to upper case

    str = str.toUpperCase();

    // regular expression to check pattern and split

    var hkidPat = /^([A-Z]{1,2})([0-9]{6})([A0-9])$/;

    var matchArray = str.match(hkidPat);

    // not match, return false

    if (matchArray == null)

        return false;

    // the character part, numeric part and check digit part

    var charPart = matchArray[1];

    var numPart = matchArray[2];

    var checkDigit = matchArray[3];

    // calculate the checksum for character part

    var checkSum = 0;

    if (charPart.length == 2) {

        checkSum += 9 * (10 + strValidChars.indexOf(charPart.charAt(0)));

        checkSum += 8 * (10 + strValidChars.indexOf(charPart.charAt(1)));

    } else {

        checkSum += 9 * 36;

        checkSum += 8 * (10 + strValidChars.indexOf(charPart));

    }

    // calculate the checksum for numeric part

    for (var i = 0, j = 7; i < numPart.length; i++, j--)

        checkSum += j * numPart.charAt(i);

    // verify the check digit

    var remaining = checkSum % 11;

    var verify = remaining == 0 ? 0 : 11 - remaining;

    return verify == checkDigit || (verify == 10 && checkDigit == 'A');

}

function IsHKID(str) {

    var strValidChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    // basic check length

    if (str.length < 8)

        return false;

    // handling bracket

    if (str.charAt(str.length-3) == '(' && str.charAt(str.length-1) == ')')

        str = str.substring(0, str.length - 3) + str.charAt(str.length -2);

    // convert to upper case

    str = str.toUpperCase();

    // regular expression to check pattern and split

    var hkidPat = /^([A-Z]{1,2})([0-9]{6})([A0-9])$/;

    var matchArray = str.match(hkidPat);

    // not match, return false

    if (matchArray == null)

        return false;

    return true;

 }