Static keyReleased 

pub static keyReleased: KeyReleasedInternalType

The keyReleased() function is called once every time a key is released. See key and keyCode for more information.

Browsers may have different default behaviors attached to various key events. To prevent any default behavior for this event, add "return false" to the end of the method.

Examples

let value = 0;
function draw() {
  fill(value);
  rect(25, 25, 50, 50);
}
function keyReleased() {
  if (value === 0) {
    value = 255;
  } else {
    value = 0;
  }
  return false; // prevent any default behavior
}