SmolinPavel/performance-battle.html

## performance-battle.html
<html>
  <head>
    <title>JS Sandbox</title>
  </head>
  <body>
    <script>
      const object = {
        test: "test",
        paul: "paul",
        morning: { test: "test", paul: "paul" }
      };

      let test1 = { test: "default" };
      const t0 = performance.now();
      Object.keys(object).forEach(item => {
        test1[item] = object[item];
      });
      const t1 = performance.now();
      console.log("Call to forEach took " + (t1 - t0) + " milliseconds.");

      let test2 = { test: "default" };
      const t2 = performance.now();
      test2 = { ...test2, ...object };
      const t3 = performance.now();
      console.log("Call to spread took " + (t3 - t2) + " milliseconds.");

    </script>
  </body>
</html>
	<html>
	<head>
	<title>JS Sandbox</title>
	</head>
	<body>
	<script>
	const object = {
	test: "test",
	paul: "paul",
	morning: { test: "test", paul: "paul" }
	};

	let test1 = { test: "default" };
	const t0 = performance.now();
	Object.keys(object).forEach(item => {
	test1[item] = object[item];
	});
	const t1 = performance.now();
	console.log("Call to forEach took " + (t1 - t0) + " milliseconds.");

	let test2 = { test: "default" };
	const t2 = performance.now();
	test2 = { ...test2, ...object };
	const t3 = performance.now();
	console.log("Call to spread took " + (t3 - t2) + " milliseconds.");

	</script>
	</body>
	</html>