let isTrue = false;
document.getElementById("hamburger").onclick = function() {toggle()};
function stop() {
    let someElement= document.getElementById("wholeBody");
    someElement.className += " stop";//add "newclass" to element (space in front is important)
}
function deleteStop() {
    let someElement= document.getElementById("wholeBody");
    someElement.className -= " stop";
}
function toggle() {
    isTrue = !isTrue;
    if (isTrue === true){
        stop();
    }
    if (isTrue === false) {
        deleteStop()
    }
}