Run results for: Concat vs push(...) for large arrays fork seb

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

window.top.tests = {control:[], concat:[], pushspread:[], spreadonly: []};
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'); }
Push Spread
window.top.tests.pushspread.push(...window.test); if (window.top.tests.pushspread.length > window.cutoff) { window.top.tests.pushspread = []; console.log('reset spread'); }
Spread only
window.top.tests.spreadonly = [...window.top.tests.spreadonly, ...window.test]; if (window.top.tests.spreadonly.length > window.cutoff) { window.top.tests.spreadonly = []; console.log('reset spread'); }