Run results for: json stringify vs array tostring - complex structures

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

toString

411K/s

JSON.stringify

210K/s

View exact numbers

Test name	Executions per second
✓ toString	411,424 Ops/sec
JSON.stringify	210,478 Ops/sec

Script Preparation code:

function moreData(arr, left) {
  if(left === 0) return arr;
  else {
    arr.push({
      data: {
        properties: {
          string: "value",
          parameter: Math.floor(Math.random() * 256)
        },
        embeddedArray: new Array(Math.floor(Math.random() * 100)).fill(0)
      }
    });
  	return moreData(arr, left - 1);
  }
}
function makeTestData() { return moreData([], 4); }

Tests:

toString
makeTestData().toString()
JSON.stringify
JSON.stringify(makeTestData());

Run results for: json stringify vs array tostring - complex structures

Tests performance of Array.toString vs JSON.stringify for complex structures (array of objects as opposed to array of primitive types)

toString

JSON.stringify