Benchmark: Iterators vs Arrays

HTML Preparation code:

<!--your preparation HTML code goes here-->

Tests:

Arrays
const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; arr.filter(n => n % 2 === 0).map(n => ({ result: n })).forEach(n => console.log("n = ", n));
Iterator
const arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; const iterator = Iterator.from(arr); iterator.filter(n => n % 2 === 0).map(n => ({ result: n })).forEach(n => console.log("n = ", n));

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Iterator

8K/s

Arrays

7K/s

Fastest: Iterator (1.2x faster)

View exact numbers

✓ Iterator: 8,304 ops/sec
• Arrays: 7,177 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Arrays
Iterator

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:145.0) Gecko/20100101 Firefox/145.0

Browser/OS: Firefox 145 on Ubuntu

View result in a separate tab

Arrays

15K/s

Iterator

13K/s

View exact numbers

Test name	Executions per second
✓ Arrays	14,872 Ops/sec
Iterator	13,379 Ops/sec

Iterators vs Arrays (version: 1)

Comparing performance of: `Arrays vs Iterator`

Created: one year ago by: Guest

Go to the latest result

Arrays

Iterator

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Iterators vs Arrays (version: 1)

Comparing performance of: Arrays vs Iterator

Created: one year ago by: Guest

Go to the latest result

Arrays

Iterator

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Arrays vs Iterator`