FLamparski/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"/>
	<title>maps maps maps</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
</head>
<body>
	<h1>Open the console to view the results</h1>
	<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
</body>
</html>

## suite.js
"use strict";

(function (factory) {
	if (typeof Benchmark !== "undefined") {
		factory(Benchmark);
	} else {
		factory(require("benchmark"));
	}
})(function (Benchmark) {
	var suite = new Benchmark.Suite;

	Benchmark.prototype.setup = function () {
		let len = 1000;
		window.objs = new Array(len);
		while(len--) {
		    objs[len] = {
		        objid: `o_${len}`,
		    };
		}

		function getKey(obj) {
		    return obj.objid;
		}
	};


	suite.add("const keyToObj = {};", function () {
		const keyToObj = {};
		let len = objs.length;
		while(len--) {
		    const obj = objs[len];
		    keyToObj[getKey(obj)] = obj;
		}
	});

	suite.add("const keyToObj = new Map();", function () {
		const keyToObj = new Map();
		let len = objs.length;
		while(len--) {
		    const obj = objs[len];
		    keyToObj.set(getKey(obj), obj);
		}
	});

	suite.on("cycle", function (evt) {
		console.log(" - " + evt.target);
	});

	suite.on("complete", function (evt) {
		console.log(new Array(30).join("-"));

		var results = evt.currentTarget.sort(function (a, b) {
			return b.hz - a.hz;
		});

		results.forEach(function (item) {
			console.log((idx + 1) + ". " + item);
		});
	});

	console.log("maps maps maps");
	console.log(new Array(30).join("-"));
	suite.run();
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>maps maps maps</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
	</head>
	<body>
	<h1>Open the console to view the results</h1>
	<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2>
	</body>
	</html>
	"use strict";

	(function (factory) {
	if (typeof Benchmark !== "undefined") {
	factory(Benchmark);
	} else {
	factory(require("benchmark"));
	}
	})(function (Benchmark) {
	var suite = new Benchmark.Suite;

	Benchmark.prototype.setup = function () {
	let len = 1000;
	window.objs = new Array(len);
	while(len--) {
	objs[len] = {
	objid: `o_${len}`,
	};
	}

	function getKey(obj) {
	return obj.objid;
	}
	};


	suite.add("const keyToObj = {};", function () {
	const keyToObj = {};
	let len = objs.length;
	while(len--) {
	const obj = objs[len];
	keyToObj[getKey(obj)] = obj;
	}
	});

	suite.add("const keyToObj = new Map();", function () {
	const keyToObj = new Map();
	let len = objs.length;
	while(len--) {
	const obj = objs[len];
	keyToObj.set(getKey(obj), obj);
	}
	});

	suite.on("cycle", function (evt) {
	console.log(" - " + evt.target);
	});

	suite.on("complete", function (evt) {
	console.log(new Array(30).join("-"));

	var results = evt.currentTarget.sort(function (a, b) {
	return b.hz - a.hz;
	});

	results.forEach(function (item) {
	console.log((idx + 1) + ". " + item);
	});
	});

	console.log("maps maps maps");
	console.log(new Array(30).join("-"));
	suite.run();
	});