Change flatpickr config

script.js

//Change flatpickr config on Vacancy form
let calendar = $('#ff_5_birth, #ff_9_birth').get(0)._flatpickr;

if (calendar) {
    let currentDate = new Date();
    let maxDate = new Date(currentDate.setFullYear(currentDate.getFullYear() - 18));

    // Convert minDate to 'd M Y' format
    let maxDateString = maxDate.getDate() + ' ' + maxDate.toLocaleString('default', { month: 'short' }) + ' ' + maxDate.getFullYear();

    calendar.set("dateFormat", "d M Y");
    calendar.set("maxDate", maxDateString);
}