Run results for: concat vs push vs push loop

Run details:

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

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

concat

14K/s

push

1K/s

push in a loop

821/s

View exact numbers

HTML Preparation code:

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

Tests:

concat
const largeArray = new Array(10000); let rows = new Array(100000); rows = rows.concat(largeArray);
push
const largeArray = new Array(10000); const rows = new Array(100000); rows.push(...largeArray);
push in a loop
const largeArray = new Array(10000); const rows = new Array(100000); for (const item of largeArray) { rows.push(item); }