Benchmark: for loop vs concat vs push(...) vs push.apply for large arrays

Script Preparation code:

window.top.tests = {control:[], concat:[], spread:[], pushApply:[]};
window.test = (new Array(10)).fill(null);
window.cutoff = 5000;

Tests:

Control (for push)
for (let element of window.test) window.top.tests.control.push(element); if (window.top.tests.control.length > window.cutoff) { window.top.tests.control = []; console.log('reset control'); }
Concat
window.top.tests.concat = window.top.tests.concat.concat(window.test); if (window.top.tests.concat.length > window.cutoff) { window.top.tests.concat = []; console.log('reset concat'); }
Spread
window.top.tests.spread.push(...window.test); if (window.top.tests.spread.length > window.cutoff) { window.top.tests.spread = []; console.log('reset spread'); }
Push.apply
Array.prototype.push.apply(window.top.tests.pushApply, window.test); if (window.top.tests.pushApply.length > window.cutoff) { window.top.tests.pushApply = []; console.log('reset pushApply'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Control (for push)
Concat
Spread
Push.apply

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/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

Spread

4.2M/s

Push.apply

4.2M/s

Concat

1.4M/s

Control (for push)

982K/s

View exact numbers

Test name	Executions per second
✓ Spread	4,240,546 Ops/sec
Push.apply	4,192,860 Ops/sec
Concat	1,382,397 Ops/sec
Control (for push)	981,710 Ops/sec

for loop vs concat vs push(...) vs push.apply for large arrays (version: 1)

Comparing the various ways to append to a large array

Comparing performance of: `Control (for push) vs Concat vs Spread vs Push.apply`

Created: one year ago by: Guest

Go to the latest result

Control (for push)

Concat

Spread

Push.apply

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

for loop vs concat vs push(...) vs push.apply for large arrays (version: 1)

Comparing the various ways to append to a large array

Comparing performance of: Control (for push) vs Concat vs Spread vs Push.apply

Created: one year ago by: Guest

Go to the latest result

Control (for push)

Concat

Spread

Push.apply

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Control (for push) vs Concat vs Spread vs Push.apply`