30-seconds-of-code/snippets/measure-time-taken-by-function.md

Measure time taken by function

Use performance.now() to get start and end time for the function, console.log() the time taken. First argument is the function name, subsequent arguments are passed to the function.

var timeTaken = (f,...args) => {
  var t0 = performance.now(), r = f(...args);
  console.log(performance.now() - t0);
  return r;
}