Parse DateString to get valid date object

[Uzlander]

Hi community! The type of function which parses the DateString (from the date-picker, given nuDate available formats) and returns a valid Date Object (to compare/calculate/manipulate) i was in need of myself. Relatively simple implementation, still maybe others benefit form it too

Code: Select all

function parseNBDate(dateStr, dots = true, yearFirst = false) {
    if (!dateStr) return null;
    const separator = dots ? '.' : '-';
    const parts = dateStr.split(separator);
    if (parts.length !== 3) return null;
    let day, month, year;
    //
    if (yearFirst) {
        year = parseInt(parts[0], 10);
        month = parseInt(parts[1], 10);
        day = parseInt(parts[2], 10);
    } else {
        day = parseInt(parts[0], 10);
        month = parseInt(parts[1], 10);
        year = parseInt(parts[2], 10);
    }
    // 3. Handle 2-digit years if necessary
    if (year < 100) {
        year += 2000; // Assumes 21st century (e.g., 25 -> 2025)
    }
     // Validate ranges
    if (isNaN(day) || isNaN(month) || isNaN(year) || 
        day < 1 || day > 31 || 
        month < 1 || month > 12 || 
        year < 2000 || year > 9999) { return null; }
    //
    return new Date(year, month - 1, day);
}