Problem with edge:"rising"

Hi. My first evening with Espruino... and my first program seems to have a lot in common with this thread...

i=0;
lastTime=getTime();
function f() {
  now=getTime();
  if ((now-lastTime)>0.2) {
    lastTime=now;
    i = (i+1) % 8;
    digitalWrite(LED1, i&1);
   digitalWrite(LED2,i&2);
   digitalWrite(LED3,i&4);
  }
}
setWatch(f,BTN,{repeat:true,edge:'rising'});

The intention is that for every press of the button the LEDs count in binary from 000 to 111...

Seems to work! Thanks!