Run results for: Which Is the Fastest - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36

Browser: Chrome 80

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
while loop	135.5 Ops/sec
// for loop	136.3 Ops/sec
// .forEach() method	747.1 Ops/sec
// for...of loop	4221.0 Ops/sec

Script Preparation code:

var arr = [];

for(var i = 0; i < 100000; i++){
  arr.push(Math.random())
}

Tests:

while loop
let i=0; while(i < arr.length) { // do stuff i++; }
// for loop
for(let i=0; i<arr.length; i++) { // do stuff }
// .forEach() method
arr.forEach((element) => { // do stuff });
// for...of loop
for(const element of arr) { // do stuff }