mmsaffari/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"/>
	<title>Unique Property Lister #jsbench #jsperf</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 () {
		var array = [{"name":"Joe", "age":17}, {"name":"Bob", "age":17}, {"name":"Carl", "age": 35}];

		const _getUnique = (arrayOfObjects, propertyName) => {
			var unique = [];
			var distinct = [];
			for (let i = 0; i < arrayOfObjects.length; i++) {
				if (!unique[arrayOfObjects[i][propertyName]]) {
					distinct.push(arrayOfObjects[i][propertyName]);
					unique[arrayOfObjects[i][propertyName]] = 1;
				}
			}
			return distinct
		}

		Array.prototype.distinct = function(item){
		  var results = [];
		    for (var i = 0, l = this.length; i < l; i++)
		        if (!item){
		            if (results.indexOf(this[i]) === -1)
		                results.push(this[i]);
		            } else {
		            if (results.indexOf(this[i][item]) === -1)
		                results.push(this[i][item]);
		        }
		    return results;
		};

		const _getUniqueEx=(array, propName)=>{
			var results = [];
				for (var i = 0, l = array.length; i < l; i++){
					if (results.indexOf(array[i][propName]) === -1)
						results.push(array[i][propName]);
				}
				return results;
		}
	};


	suite.add("var unique = [];", function () {
		var unique = [];
		var distinct = [];
		for( let i = 0; i < array.length; i++ ){
		  if( !unique[array[i].age]){
		    distinct.push(array[i].age);
		    unique[array[i].age] = 1;
		  }
		}
	});

	suite.add("var flags = [], output = [], l = array.length, i;", function () {
		var flags = [], output = [], l = array.length, i;
		for( i=0; i<l; i++) {
		    if( flags[array[i].age]) continue;
		    flags[array[i].age] = true;
		    output.push(array[i].age);
		}
	});

	suite.add("const unique= _getUniqueEx(array, 'age')", function () {
		const unique= _getUniqueEx(array, 'age')
	});

	suite.add("const unique=array.distinct('age')", function () {
		const unique=array.distinct('age')
	});

	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("Unique Property Lister #jsbench #jsperf");
	console.log(new Array(30).join("-"));
	suite.run();
});
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>Unique Property Lister #jsbench #jsperf</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 () {
	var array = [{"name":"Joe", "age":17}, {"name":"Bob", "age":17}, {"name":"Carl", "age": 35}];

	const _getUnique = (arrayOfObjects, propertyName) => {
	var unique = [];
	var distinct = [];
	for (let i = 0; i < arrayOfObjects.length; i++) {
	if (!unique[arrayOfObjects[i][propertyName]]) {
	distinct.push(arrayOfObjects[i][propertyName]);
	unique[arrayOfObjects[i][propertyName]] = 1;
	}
	}
	return distinct
	}

	Array.prototype.distinct = function(item){
	var results = [];
	for (var i = 0, l = this.length; i < l; i++)
	if (!item){
	if (results.indexOf(this[i]) === -1)
	results.push(this[i]);
	} else {
	if (results.indexOf(this[i][item]) === -1)
	results.push(this[i][item]);
	}
	return results;
	};

	const _getUniqueEx=(array, propName)=>{
	var results = [];
	for (var i = 0, l = array.length; i < l; i++){
	if (results.indexOf(array[i][propName]) === -1)
	results.push(array[i][propName]);
	}
	return results;
	}
	};


	suite.add("var unique = [];", function () {
	var unique = [];
	var distinct = [];
	for( let i = 0; i < array.length; i++ ){
	if( !unique[array[i].age]){
	distinct.push(array[i].age);
	unique[array[i].age] = 1;
	}
	}
	});

	suite.add("var flags = [], output = [], l = array.length, i;", function () {
	var flags = [], output = [], l = array.length, i;
	for( i=0; i<l; i++) {
	if( flags[array[i].age]) continue;
	flags[array[i].age] = true;
	output.push(array[i].age);
	}
	});

	suite.add("const unique= _getUniqueEx(array, 'age')", function () {
	const unique= _getUniqueEx(array, 'age')
	});

	suite.add("const unique=array.distinct('age')", function () {
	const unique=array.distinct('age')
	});

	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("Unique Property Lister #jsbench #jsperf");
	console.log(new Array(30).join("-"));
	suite.run();
	});