Run results for: Array of undefined

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.128 Safari/537.36

Browser: Chrome 89

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var pushed = [];
for (let i = 0; i < 1000; i++) pushed.push(undefined);
var filled = (new Array(1000)).fill(undefined);

Tests: