Run results for: json stringify vs array tostring - preprepped data

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

Browser: Chrome 75

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
toString	80831.4 Ops/sec
JSON.stringify	45290.8 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([], Math.floor(Math.random() * 1023) + 1); }
var testData = [];
for(let i = 0; i < 10000; i++) testData[i] = makeTestData();

Tests:

toString
JSON.stringify(testData[0]);
JSON.stringify
testData[0].toString();

Run results for: json stringify vs array tostring - preprepped data

toString

JSON.stringify