window.addEventListener('load', () => {
    setDateInput();
})

function setDateInput(){
    document.querySelector('.arboretum-kontakt .date').setAttribute('type','date');
    document.querySelector('.arboretum-kontakt .date').setAttribute('min',formatDate());
    document.querySelector('.arboretum-kontakt .date').value=formatDate();
    document.querySelector('.arboretum-kontakt .hour').value='7.30 - 15.30';
    console.log(formatDate());
}

function formatDate() {
    date      = new Date();
    var d = new Date(date.setDate(date.getDate() + 5)),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) 
        month = '0' + month;
    if (day.length < 2) 
        day = '0' + day;

    return [year, month, day].join('-');
}