wowAndFlutter.js

wowAndFlutter.js

// 2010-12-31 jorge@jorgechamorro.com
// JavaScript ms clock's wow and flutter

var kSample= 1e3;
var res= new Array(kSample);

var ctr;
var st= Date.now()+ 2; //start time
while (Date.now() < st) ; //get in sync with ms clock

for (var i=0; i<1e3; i++) {
  st++;
  ctr= 0;
  while (Date.now() < st) ctr++;
  res[i]= ctr;
}

var min= 1e6;
var max= -1e6;
var avg= 0;
res.forEach(function(v,i,o){
  avg+= v;
  if (v<min) return min=v;
  if (v>max) return max=v;
});
avg/=res.length;

console.log(res);
console.log(["min:", min, ", avg:", avg, ", max:", max].join(''));