Benchmark: Object Hashmap vs Array.indexOf

Script Preparation code:

var testArray = ['a','b', 'c','d','e','f','g','h','i','j', 'k', 'l','m','n' ,'bar','o', 'p', 'q', 'r', 's','t','u', 'v','w','x','y', 'z'];
let i =0;

var objectHash = testArray.reduce((acc, key) => {acc[key] = i++; return acc;},{});

Tests:

Object Hash-map
const testStrFirst = 'foo'; objectHash[testStrFirst]; const testStrSecond = 'bar'; objectHash[testStrSecond]; const testStrNotMatch = 'baz'; objectHash[testStrNotMatch];
Array.indexOf
const testStrFirst = 'foo'; testArray.indexOf(testStrFirst); const testStrSecond = 'bar'; testArray.indexOf(testStrSecond); const testStrNotMatch = 'baz'; testArray.indexOf(testStrNotMatch);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object Hash-map
Array.indexOf

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 Edg/132.0.0.0

Browser/OS: Chrome 132 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Object Hash-map	35047096.0 Ops/sec
Array.indexOf	16634262.0 Ops/sec

Related benchmarks:

Object Hashmap vs Array.indexOf (version: 1)

Matching a string against more than one possibility.

Comparing performance of: Object Hash-map vs Array.indexOf

Created: one year ago by: Guest

Jump to the latest result

Object Hash-map

Array.indexOf

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A