JS校验身份证号码是否合法实例代码

在人员管理系统的开发过程中常常会用到身份证号码合法性校验,即是防止一些人输错身份证号码,也是为了保证录入数据的准确性,防止各类人员乱输入相关人员信息,下面分享一个JS身份证合法性校验的实例代码,即留作备份,也希望能帮助到有需要的同行。

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>IdCard</title>
    <script src="~/Scripts/jquery-3.4.1.min.js"></script>
</head>
<body style="text-align:center;">
    <p>身份证号:</p>
    <input type="text" id="idcard" />
    <input type="button" id="checkidcard" value="校验身份" />
    <p>校验结果:</p>
    <input type="text" id="istrue" />
    <input type="button" id="checkidcard" value="               " />
    <script>

        $(function () {
            $("#checkidcard").click(function () {

                if (isCardNo($("#idcard").val()) == true) {
                    $("#istrue").val("校验通过");
                } else {
                    $("#istrue").val("校验不通过");
                }
            });

        });

        function isCardNo(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 pass = true;

            if (code.length > 0 && !(/^[1-9]\d{5}(19|20|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/.test(code) || /^[1-9]\d{5}\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{2}[0-9Xx]$/.test(code))) {
                pass = false;

            } else if (code.length > 0 && !city[code.substr(0, 2)]) {
                pass = false;
            } else {

                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]) {
                        pass = false;
                    }
                }
            }
            return pass;
        }

    </script>
</body>
</html>

注:核心代码为isCardNo()方法,调用该方法可以获得true和false两个状态,代表的意思就是合法和不合法。

THE END