js验证统一社会信用代码

function validateCreditCode(code) {
    var reg = /^[0 - 9A - Z]{18}$/;
    if (!reg.test(code)) {
        return false;
    }
    // 校验码计算相关（简化示例，实际按完整算法）
    var weight = [1, 3, 9, 27, 19, 26, 16, 17, 20, 29, 25, 13, 8, 24, 10, 30, 28];
    var map = { '0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9, 'A': 10, 'B': 11, 'C': 12, 'D': 13, 'E': 14, 'F': 15, 'G': 16, 'H': 17, 'J': 18, 'K': 19, 'L': 20, 'M': 21, 'N': 22, 'P': 23, 'Q': 24, 'R': 25, 'T': 26, 'U': 27, 'W': 28, 'X': 29, 'Y': 30 };
    var sum = 0;
    for (var i = 0; i < 17; i++) {
        sum += map[code[i]] * weight[i];
    }
    var mod = sum % 31;
    var checkCode = mod === 0? '0' : (31 - mod).toString();
    return code[17] === checkCode;
}

var code = "91430100MA4L16JQ9T";
console.log(validateCreditCode(code));