js 根据身份证获取出生日期与年龄

js 根据身份证获取出生日期与年龄

//获取出生日期
    getBirthdayFromIdCard(idCard) {
        var birthday = "";
        if (idCard != null && idCard != "") {
            if (idCard.length == 15) {
                birthday = "19" + idCard.substr(6, 6);
            } else if (idCard.length == 18) {
                birthday = idCard.substr(6, 8);
            }

            birthday = birthday.replace(/(.{4})(.{2})/, "$1-$2-");
        }
        return birthday;
    },
    //根据身份证获取年龄
    getAgeFromIdCard(idCard){
        var myDate = new Date();
        var month = myDate.getMonth() + 1;
        var day = myDate.getDate();
        var age= myDate.getFullYear() - idCard.substring(6, 10) - 1;//大概多少岁
        //如果现在月份超过身份证月份则+1
        if (
           idCard.substring(10, 12) < month ||
          (idCard.substring(10, 12) == month && idCard.substring(12, 14) <= day)
        ) {
          age++;
        }
        return age;
    },

我也是从网上找的 菜鸟一个，发布的时候没有 借鉴的选项，所以选择了原创