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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
toString	4884738.0 Ops/sec
JSON.stringify	2070488.1 Ops/sec
Array.join	2750161.0 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(',')

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

toString

JSON.stringify

Array.join