<script>
    //身份證號合法性驗證
    //支持18位身份證號
    //支持地址編碼、出生日期、校驗位驗證
    function IdentityCodeValid(code) {
        var city = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "內蒙古", 21: "遼寧", 22: "吉林", 23: "黑龍江 ", 31: "上海", 32: "江蘇", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山東", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "廣東", 45: "廣西", 46: "海南", 50: "重慶", 51: "四川", 52: "貴州", 53: "雲南", 54: "西藏 ", 61: "陜西", 62: "甘肅", 63: "青海", 64: "寧夏", 65: "新疆", 71: "臺灣", 81: "香港", 82: "澳門", 91: "國外 " };
        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 = "身份證號格式錯誤";
            pass = false;
        }

        if (!city[code.substr(0, 2)]) {
            tip = "地址編碼錯誤";
            pass = false;
        }
        if (code.length == 18) {
            sBirthday = code.substr(6, 4) + "-" + Number(code.substr(10, 2)) + "-" + Number(code.substr(12, 2));
            var d = new Date(sBirthday.replace(/-/g, "/"))
            if (sBirthday != (d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate())) {
                //alert("非法生日");
                pass = false;
            }
        }
        //18位身份證需要驗證最後一位校驗位
        if (code.length == 18) {
            code = code.split(‘‘);
            //∑(ai×Wi)(mod 11)
            //加權因子
            var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
            //校驗位
            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]) {
                tip = "校驗位錯誤";
                pass = false;
            }

        }
         return pass;
    }
    
    $(function () {
        document.write(IdentityCodeValid("410481199208156010"), "<br/>");
        document.write(IdentityCodeValid("340524198002300019"), "<br/>")
        document.write(IdentityCodeValid("340524197711111111"), "<br/>")
        document.write(IdentityCodeValid("34052419800101001x"), "<br/>");
    });

</script>
 

js驗證身份證號