首先根据身份证获取年龄/生日/性别

 handleBlur(data) {let idCard = data.target.value;let sex = null;let birth = null;let myDate = new Date();let month = myDate.getMonth() + 1;let day = myDate.getDate();let age = 0;if (idCard.length === 18) {age = myDate.getFullYear() - idCard.substring(6, 10) - 1;sex = idCard.substring(16, 17);birth =idCard.substring(6, 10) +"-" +idCard.substring(10, 12) +"-" +idCard.substring(12, 14);if (idCard.substring(10, 12) < month ||(idCard.substring(10, 12) === month && idCard.substring(12, 14) <= day)) {age++;}} else if (idCard.length === 15) {age = myDate.getFullYear() - idCard.substring(6, 8) - 1901;sex = idCard.substring(13, 14);birth ="19" +idCard.substring(6, 8) +"-" +idCard.substring(8, 10) +"-" +idCard.substring(10, 12);if (idCard.substring(8, 10) < month ||(idCard.substring(8, 10) === month && idCard.substring(10, 12) <= day))age++;}if (sex % 2 === 0) {sex = 2;} else {sex = 1;}this.formData.customerAge = age;this.formData.gender = sex;this.formData.birthday = birth;},

根据年龄获取生日，年份根据年龄算，月日取当天日期

function calculateBirthdate(age) {// 获取当前日期const currentDate = new Date();// 获取当前年份const currentYear = currentDate.getFullYear();// 计算出生年份const birthYear = currentYear - age;// 获取当前月份和日期const currentMonth = currentDate.getMonth() + 1; // 月份是从0开始的，所以要加1const currentDay = currentDate.getDate();// 构建出生日期的字符串const birthdate = `${birthYear}-${currentMonth}-${currentDay}`;return birthdate;
}// 示例用法
const age = 25; // 用你实际的年龄替换
const birthdate = calculateBirthdate(age);
console.log(birthdate);

根据生日获取年龄

function calculateAge(birthdate) {// 将出生日期字符串转换为日期对象const birthDateObj = new Date(birthdate);// 获取当前日期const currentDate = new Date();// 计算年龄let age = currentDate.getFullYear() - birthDateObj.getFullYear();// 考虑生日还未到的情况const currentMonth = currentDate.getMonth() + 1; // 月份是从0开始的，所以要加1const birthMonth = birthDateObj.getMonth() + 1;if (currentMonth < birthMonth || (currentMonth === birthMonth && currentDate.getDate() < birthDateObj.getDate())) {age--;}return age;
}// 示例用法
const birthdate = '1990-05-15'; // 用实际的出生日期替换
const age = calculateAge(birthdate);
console.log(age);