I am trying to have a functionality (1) if mouseDown has been pressed for more than x amount of time. If it has been briefly pressed (less than x amount of time) i want to have another functionality (2) happen.

function onMouseDown(event) { 
  var delay;
   timeClickDown = Date.now(); 
  delay= timeClickDown-timeClickUp;
   if(delay>x) {functionality(1)}
else if(delay<=x) {functionality(2)}}

 function onMouseUp(event){
   timeClickUp = Date.now();
 }

Doing this right now works but only after i click twice (because timeClickDown gets its value only after first click).