Browsers JS Benchmarks

macos 11.3.1 macbook pro 13-inch 2017 processor 2.5 GHz Dual-Core Intel Core i7

function jsPerf() {
  console.time("js-loop");
  for (let i = 0, a = 0; i < 1e8; i++) {
    a += 1;
  }
  console.timeEnd("js-loop");
}
for (let i = 0; i < 10; i++) {
  jsPerf();
}

Chrome96 : Firefox95 : Safari15.2 speed is 7 : 6 : 1 or so

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macos 12.1 macbook pro 14-inch 2021 processor 3.2GHz 8+2-Core M1 Pro

Chrome96 : Firefox95 : Safari15.2 speed is 8.5 : 6.5 : 1 or so