Run results for: json stringify vs array tostring vs array join

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 132

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

JSON.stringify

6.5M/s

Array.join

5.9M/s

toString

4.8M/s

View exact numbers

Test name	Executions per second
✓ JSON.stringify	6,492,265 Ops/sec
Array.join	5,851,773 Ops/sec
toString	4,766,463 Ops/sec

Script Preparation code:

function moreData(arr, left) {
  if(left === 0) return arr;
  else {
    arr.push(Math.floor(Math.random() * 256));
  	return moreData(arr, left - 1);
  }
}
function makeTestData() { return moreData([], 4); }

Tests:

toString
makeTestData().toString()
JSON.stringify
JSON.stringify(makeTestData());
Array.join
makeTestData().join(',')