Run results for: Object array and property for vs foreach vs for..in vs for..of

Test name	Executions per second
✓ for	12,481,808 Ops/sec
foreach	12,133,169 Ops/sec
for..of	9,171,613 Ops/sec
for in	6,463,621 Ops/sec
Script Preparation code:
let someValue;
var array = new Array([
[
	{
		"name": "Oleg Knox",
		"phone": "(310) 920-5482"
	},
	{
		"name": "Donna Castaneda",
		"phone": "1-863-829-4852"
	},
	{
		"name": "Mariko Colon",
		"phone": "(844) 852-3112"
	},
	{
		"name": "Ria Morales",
		"phone": "1-477-926-8509"
	},
	{
		"name": "Whoopi Hewitt",
		"phone": "(839) 561-4791"
	},
	{
		"name": "Quynn Monroe",
		"phone": "(631) 447-0232"
	},
	{
		"name": "Graiden Stanton",
		"phone": "(525) 769-5457"
	},
	{
		"name": "Abraham Jacobs",
		"phone": "(644) 639-2672"
	},
	{
		"name": "Tatum Gibbs",
		"phone": "(763) 857-7477"
	},
	{
		"name": "Dacey Dickson",
		"phone": "1-490-310-7555"
	},
	{
		"name": "August Miranda",
		"phone": "1-682-236-4516"
	},
	{
		"name": "Malik Castaneda",
		"phone": "(340) 624-8892"
	},
	{
		"name": "Brandon Chandler",
		"phone": "(347) 478-4637"
	},
	{
		"name": "Kirk Mack",
		"phone": "(715) 925-4632"
	},
	{
		"name": "Devin Sears",
		"phone": "1-567-177-2373"
	},
	{
		"name": "Devin Guy",
		"phone": "1-498-263-2204"
	},
	{
		"name": "Ainsley Lynn",
		"phone": "1-688-558-2641"
	},
	{
		"name": "Brenden Atkinson",
		"phone": "(378) 193-6464"
	},
	{
		"name": "Phoebe Robles",
		"phone": "(822) 285-7133"
	},
	{
		"name": "Breanna Berger",
		"phone": "1-698-717-5074"
	},
	{
		"name": "Lani Zamora",
		"phone": "(760) 401-3735"
	},
	{
		"name": "Kelly Cortez",
		"phone": "1-286-202-4217"
	},
	{
		"name": "Marny Alston",
		"phone": "1-391-945-9160"
	},
	{
		"name": "Rhoda Barber",
		"phone": "1-660-847-6761"
	},
	{
		"name": "Acton Villarreal",
		"phone": "(871) 455-6411"
	},
	{
		"name": "Arden Lucas",
		"phone": "(384) 546-8108"
	},
	{
		"name": "Kiayada Luna",
		"phone": "(872) 416-3124"
	},
	{
		"name": "Raven Bullock",
		"phone": "(383) 277-4521"
	},
	{
		"name": "Cara Hopper",
		"phone": "(875) 402-3638"
	},
	{
		"name": "Victoria Brennan",
		"phone": "1-269-223-5438"
	},
	{
		"name": "Alfreda Pope",
		"phone": "1-496-991-8632"
	},
	{
		"name": "Irene Dejesus",
		"phone": "(217) 389-6445"
	},
	{
		"name": "Daphne Hays",
		"phone": "1-428-327-8136"
	},
	{
		"name": "Sylvia Whitehead",
		"phone": "1-985-732-6807"
	},
	{
		"name": "Keefe Calhoun",
		"phone": "1-208-367-6021"
	},
	{
		"name": "Jane Beasley",
		"phone": "(420) 703-9897"
	},
	{
		"name": "Bo Browning",
		"phone": "1-934-285-0799"
	},
	{
		"name": "Cain Ferguson",
		"phone": "(558) 303-2938"
	},
	{
		"name": "Tashya Rodgers",
		"phone": "1-781-852-7964"
	},
	{
		"name": "Amanda Willis",
		"phone": "(622) 485-2878"
	},
	{
		"name": "Thaddeus Jimenez",
		"phone": "(242) 169-3543"
	},
	{
		"name": "Riley Kline",
		"phone": "(427) 417-8803"
	},
	{
		"name": "Vladimir Boyle",
		"phone": "(544) 820-4531"
	},
	{
		"name": "Davis Monroe",
		"phone": "1-680-852-8331"
	},
	{
		"name": "Chester Cash",
		"phone": "(471) 266-7077"
	},
	{
		"name": "Jordan Sparks",
		"phone": "1-326-753-2814"
	},
	{
		"name": "Emmanuel Reynolds",
		"phone": "(418) 891-8014"
	},
	{
		"name": "Garrison Rush",
		"phone": "(117) 826-3854"
	},
	{
		"name": "Freya Knight",
		"phone": "(553) 455-8021"
	},
	{
		"name": "Christian Buckley",
		"phone": "(416) 118-3880"
	},
	{
		"name": "Tana Atkinson",
		"phone": "(642) 314-2118"
	},
	{
		"name": "Edan Christian",
		"phone": "(835) 830-8148"
	},
	{
		"name": "Drew Mueller",
		"phone": "1-215-749-6647"
	},
	{
		"name": "Christen Jacobson",
		"phone": "(373) 219-6869"
	},
	{
		"name": "Liberty Martinez",
		"phone": "(568) 473-4557"
	},
	{
		"name": "Isaac Garrison",
		"phone": "1-475-262-1128"
	},
	{
		"name": "Catherine Mclaughlin",
		"phone": "(260) 664-2336"
	},
	{
		"name": "Risa Glenn",
		"phone": "1-949-744-1771"
	},
	{
		"name": "Iola Fowler",
		"phone": "1-328-241-8230"
	},
	{
		"name": "Macaulay Garner",
		"phone": "(938) 807-9356"
	},
	{
		"name": "Bo Nicholson",
		"phone": "1-582-749-1731"
	},
	{
		"name": "Benjamin Harrison",
		"phone": "(942) 419-1076"
	},
	{
		"name": "Reagan Mejia",
		"phone": "(881) 188-4971"
	},
	{
		"name": "Hayfa Curtis",
		"phone": "1-826-931-8771"
	},
	{
		"name": "Dawn Strong",
		"phone": "1-647-833-2844"
	},
	{
		"name": "Anthony Cantrell",
		"phone": "(833) 877-1131"
	},
	{
		"name": "Alice Hayes",
		"phone": "1-954-265-4018"
	},
	{
		"name": "Giacomo Hopkins",
		"phone": "(584) 246-6864"
	},
	{
		"name": "Orson Sims",
		"phone": "1-791-612-2646"
	},
	{
		"name": "September Compton",
		"phone": "(146) 318-7398"
	},
	{
		"name": "Randall Key",
		"phone": "(666) 516-4651"
	},
	{
		"name": "Gavin Grant",
		"phone": "1-854-665-8232"
	},
	{
		"name": "Charissa Ballard",
		"phone": "(259) 747-6412"
	},
	{
		"name": "Kareem Guthrie",
		"phone": "1-826-341-6410"
	},
	{
		"name": "Oren Everett",
		"phone": "(653) 204-4204"
	},
	{
		"name": "Kyle Peterson",
		"phone": "1-646-686-3911"
	},
	{
		"name": "Bruno Case",
		"phone": "(322) 643-7873"
	},
	{
		"name": "Rana Humphrey",
		"phone": "(402) 657-9452"
	},
	{
		"name": "Linus Whitley",
		"phone": "(343) 104-5917"
	},
	{
		"name": "Cade Whitaker",
		"phone": "1-782-682-5877"
	},
	{
		"name": "Vielka Chase",
		"phone": "(512) 614-7045"
	},
	{
		"name": "Guy Lamb",
		"phone": "1-817-755-7863"
	},
	{
		"name": "Shad Mcmahon",
		"phone": "(545) 177-1282"
	},
	{
		"name": "Gwendolyn Nichols",
		"phone": "(238) 762-2316"
	},
	{
		"name": "Tatum England",
		"phone": "(228) 107-9079"
	},
	{
		"name": "Charles Berger",
		"phone": "1-821-633-5100"
	},
	{
		"name": "Fallon Burgess",
		"phone": "1-496-998-6268"
	},
	{
		"name": "Quemby Rios",
		"phone": "1-586-287-6853"
	},
	{
		"name": "Byron Zimmerman",
		"phone": "1-487-503-0852"
	},
	{
		"name": "Brynne Joseph",
		"phone": "(121) 266-0677"
	},
	{
		"name": "Lance Perry",
		"phone": "(387) 385-4518"
	},
	{
		"name": "Camilla Gilmore",
		"phone": "(755) 963-5465"
	},
	{
		"name": "Lance Smith",
		"phone": "1-486-269-1290"
	},
	{
		"name": "Remedios Nelson",
		"phone": "(510) 431-9715"
	},
	{
		"name": "Ainsley Harding",
		"phone": "(412) 703-9919"
	},
	{
		"name": "Roary Cannon",
		"phone": "1-697-584-5508"
	},
	{
		"name": "Elvis Richardson",
		"phone": "1-253-559-6215"
	},
	{
		"name": "Charles Hampton",
		"phone": "(198) 418-2605"
	},
	{
		"name": "Carol Jackson",
		"phone": "1-720-826-7566"
	},
	{
		"name": "Alea Neal",
		"phone": "(867) 699-1166"
	}
]
]);
Run results for: Object array and property for vs foreach vs for..in vs for..of

Compare loop performance

for

foreach

for in

for..of
