Run results for: push() vs [...] for large arrays

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:129.0) Gecko/20100101 Firefox/129.0

Browser: Firefox 129

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
Push	700005.3 Ops/sec
Spread	7565.9 Ops/sec

Script Preparation code:

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

Tests:

Push
for (let element of window.test) { window.top.tests.push.push(element); } if (window.top.tests.push.length > window.cutoff) { window.top.tests.push = []; console.log('reset push'); }
Spread
for (let element of window.test) { window.top.tests.spread = [...window.top.tests.spread, element]; } if (window.top.tests.spread.length > window.cutoff) { window.top.tests.spread = []; console.log('reset spread'); }