const  idCard = ’你的身份证‘；

//出生年月

let birthDay = idCard.substr(6,14);

let birthDay = idCard.substr(6, 4) + "-" + idCard.substr(10, 2) + "-" + idCard.substr(12, 2); // - 组装

//性别

let genderCode = idCard.charAt(16);

let sex;

if (parseInt(genderCode) % 2 == 0) {

    sex = '女';

}else{

   sex = '男';

}

//星座

const birthMonth = parseInt(idCard.substring(10, 12));

const birthDay = parseInt(idCard.substring(12,14));

let constellationName;

const constellations = [

    { name: '水瓶座', start: { month: 1, day: 20 }, end: { month: 2, day: 18 } },

    { name: '双鱼座', start: { month: 2, day: 19 }, end: { month: 3, day: 20 } },

    { name: '白羊座', start: { month: 3, day: 21 }, end: { month: 4, day: 19 } },

    { name: '金牛座', start: { month: 4, day: 20 }, end: { month: 5, day: 20 } },

    { name: '双子座', start: { month: 5, day: 21 }, end: { month: 6, day: 21 } },

    { name: '巨蟹座', start: { month: 6, day: 22 }, end: { month: 7, day: 22 } },

    { name: '狮子座', start: { month: 7, day: 23 }, end: { month: 8, day: 22 } },

    { name: '处女座', start: { month: 8, day: 23 }, end: { month: 9, day: 22 } },

    { name: '天秤座', start: { month: 9, day: 23 }, end: { month: 10, day: 23 } },

    { name: '天蝎座', start: { month: 10, day: 24 }, end: { month: 11, day: 22 } },

    { name: '射手座', start: { month: 11, day: 23 }, end: { month: 12, day: 21 } },

    { name: '摩羯座', start: { month: 12, day: 22 }, end: { month: 1, day: 19 } },

  ];

constellations.forEach(constellation => {

    if (birthMonth === constellation.start.month && birthDay >= constellation.start.day) {

      constellationName = constellation.name;

    } else if (birthMonth === constellation.end.month && birthDay <= constellation.end.day) {

      constellationName = constellation.name;

    }

  });

console.log(constellationName)