javascript - 当日期字符串顺序不同时，如何进行年龄计算输出年龄

Question

我想在输入字符串时计算用户的年龄，但它必须按照特定的顺序，目前这只适用于一个顺序我希望它是日/月/年，目前它只适用于月/日/年

function getAge(dateString) {
    var today = new Date();
    var birthDate = new Date(dateString);
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
        age--;
    }
    return age;
}
console.log('age: ' + getAge("16/01/1972")); **//01/16/1972 works!**

Answer 1

试试这个:

function getAge(dateString) {
    var today = new Date();
    var dateData = dateString.split('/');
    var birthDate = new Date(dateData[2], +dateData[1] - 1, dateData[0]);
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
        age--;
    }
    return age;
}
console.log('age: ' + getAge("16/11/1972"));