Run results for: Object.fromEntries vs forEach vs For Loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var columns = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'.split('');
var rows = Array.from(Array(10000)).map((i) => [...columns]);

Tests:

Object.fromEntries
rows.map((row) => Object.fromEntries(row.map((value, i) => [columns[i], value])));
For Each
rows.map((row) => { const obj = {}; row.forEach((value, i) => { obj[columns[i]] = value; }); return obj; });
For loop
rows.map((row) => { const obj = {}; for (let i = 0; i < columns.length; i++) { obj[columns[i]] = row[i]; } return obj; });