Vue學習筆記-身份證規則校驗

// 身份證驗證
Vue.prototype.$checkIdCard = function(idCard){
    let _this = this;
    let bbd = ''; // 出生日期
    let sex = ''; // 性別
    let canPass = true;
    idCard = idCard.toUpperCase();  // 轉大寫
    let len = idCard.length;
    let city={11:"北京",12:"天津",13:"河北",14:"山西",15:"內蒙古",21:"遼寧",22:"吉林",23:"黑龍江 ",31:"上海",32:"江蘇",
        33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山東",41:"河南",42:"湖北 ",43:"湖南",44:"廣東",45:"廣西",46:"海南",
        50:"重慶",51:"四川",52:"貴州",53:"雲南",54:"西藏 ",61:"陝西",62:"甘肅",63:"青海",64:"寧夏",65:"新疆",71:"臺灣",
        81:"香港",82:"澳門",91:"國外"};
    //1. 判斷長度
    if (len !== 15 && len !== 18){
        _this.$toast.error('身份證號長度不正確！');
        canPass = false;
    }
    //2. 身份證號碼爲15位或者18位，15位時全爲數字，18位前17位爲數字，最後一位是校驗位，可能爲數字或字符X。
    if (!(/(^\d{15})|(^̲\d{17}([0-9]|X))/.test(idCard))) {
        _this.$toast.error('身份證號格式錯誤！');
        canPass = false;
    }
    //3. 地址碼
    if (!city[idCard.substr(0,2)]){
        _this.$toast.error('身份證號地址碼不正確！');
        canPass = false;
    }

    let re;
    //4. 生日
    if (len === 15) {
        re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
        let arrSplit = idCard.match(re);

        //檢查生日日期是否正確
        let birth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' +arrSplit[4]);
        let isBirth = (birth.getYear() === Number(arrSplit[2])) && ((birth.getMonth() + 1) === Number(arrSplit[3])) && (birth.getDate() === Number(arrSplit[4]));
        if (!isBirth) {
            _this.$toast.error('身份證號出生日期不對！');
            canPass = false;
        }
        bbd = birth;
    } else if (len === 18) {
        re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
        let arrSplit = idCard.match(re);

        //檢查生日日期是否正確
        let birth = new Date(arrSplit[2] + "/" + arrSplit[3] + "/" +arrSplit[4]);
        let isBirth = (birth.getFullYear() === Number(arrSplit[2])) && ((birth.getMonth() + 1) === Number(arrSplit[3]))
            && (birth.getDate() === Number(arrSplit[4]) && (birth.getTime()<new Date().getTime()));
        if (!isBirth) {
            _this.$toast.error('身份證號出生日期不對！');
            canPass = false;
        } else {
            //檢驗18位身份證的校驗碼是否正確。
            //校驗位按照ISO 7064:1983.MOD 11-2的規定生成，X可以認爲是數字10。
            let valnum;
            let arrInt = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
            let arrCh = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2']
            ;
            let nTemp = 0, i;
            for (i = 0; i < 17; i++) {
                nTemp += idCard.substr(i, 1) * arrInt[i];
            }
            valnum = arrCh[nTemp % 11];
            if (valnum !== idCard.substr(17, 1)) {
                _this.$toast.error('身份證號校驗碼不正確！');
                canPass = false;
            }
        }
        bbd = birth;
    }
    // 如果身份驗證通過，計算出生年月，性別
    if(canPass == true){
        bbd = bbd.getFullYear() + '-' + Number(bbd.getMonth() + 1) + '-' + bbd.getDate();
        let arr_fix = bbd.split('-');
        if(arr_fix[1].length == 1){
            arr_fix[1] = '0' + arr_fix[1];
        }
        if(arr_fix[2].length == 1){
            arr_fix[2] = '0' + arr_fix[2];
        }
        bbd = arr_fix[0] + '-' + arr_fix[1] + '-' + arr_fix[2];

        if(idCard.length == 18){
            sex = idCard.charAt(idCard.length - 2)
        }else{
            sex = idCard.charAt(idCard.length - 1)
        }
        if(sex%2 == 1){
            sex = '男';
        }else{
            sex = '女';
        }
    }

    // canPass true時位驗證通過，false時位驗證失敗
    return {
        canPass: canPass,
        birthday: bbd,  // 返回生日
        sex: sex    // 返回性別
    };
},