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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
Push	547328.1 Ops/sec
Spread	8712.7 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'); }