JS身份证验证源码

<script language="javascript" type="text/javascript">

        function CheckIdCardField(v_card) {

            var reg = /^\d{15}(\d{2}[0-9X])?$/i;

            if (!reg.test(v_card)) {

                return false;

            }

            if (v_card.length == 15) {

                var n = new Date();

                var y = n.getFullYear();

                if (parseInt("19" + v_card.substr(6, 2)) < 1900 || parseInt("19" + v_card.substr(6, 2)) > y) {

                    return false;

                }

                var birth = "19" + v_card.substr(6, 2) + "-" + v_card.substr(8, 2) + "-" + v_card.substr(10, 2);

                if (!isDate(birth)) {

                    return false;

                }

            }

            if (v_card.length == 18) {

                var n = new Date();

                var y = n.getFullYear();

                if (parseInt(v_card.substr(6, 4)) < 1900 || parseInt(v_card.substr(6, 4)) > y) {

                    return false;

                }

                var birth = v_card.substr(6, 4) + "-" + v_card.substr(10, 2) + "-" + v_card.substr(12, 2);

                if (!isDate(birth)) {

                    return false;

                }

                iW = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1);

                iSum = 0;

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

                    iC = v_card.charAt(i);

                    iVal = parseInt(iC);

                    iSum += iVal * iW[i];

                }

                iJYM = iSum % 11;

                if (iJYM == 0) sJYM = "1";

                else if (iJYM == 1) sJYM = "0";

                else if (iJYM == 2) sJYM = "x";

                else if (iJYM == 3) sJYM = "9";

                else if (iJYM == 4) sJYM = "8";

                else if (iJYM == 5) sJYM = "7";

                else if (iJYM == 6) sJYM = "6";

                else if (iJYM == 7) sJYM = "5";

                else if (iJYM == 8) sJYM = "4";

                else if (iJYM == 9) sJYM = "3";

                else if (iJYM == 10) sJYM = "2";

                var cCheck = v_card.charAt(17).toLowerCase();

                if (cCheck != sJYM) {

                    return false;

                }

            }

            return true;

        }

    </script>