function saveChanges() {

    let destinationValues = document.getElementById("destination");
    let continentValues = document.getElementById("continent");
    let priceValues =  document.getElementById("price");
    let dateValues = document.getElementById("date");

    if (destinationValues.value === "" || continentValues.value === "" || priceValues.value === "" || dateValues.value === "") {
        return
    }

    let formData = {
        "destinationValues": destinationValues.value,
        "continentValues":continentValues.value,
        "priceValues": priceValues.value,
        "dateValues": dateValues.value
    };

    comonData.push(formData);
    render(comonData);

    destinationValues.value = "";
    continentValues.value = "";
    priceValues.value = "";
    dateValues.value = "";
}