Run results for: json stringify vs array join dumb test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
join	163202096.0 Ops/sec
JSON.stringify	26623604.0 Ops/sec
simple string concat	161016928.0 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:

join
let asd = "asdasd qwe d";
JSON.stringify
let asd = JSON.stringify("asdasd qwe d");
simple string concat
let asd = "asdasd qwe d" + "zxc" + "qwe";

Run results for: json stringify vs array join dumb test

join

JSON.stringify

simple string concat