Benchmark: create a new Date object vs modifing an existing one

HTML Preparation code:

<div id="date.new"></div>
<div id="date.set"></div>

Script Preparation code:

var now;
var elNow = document.getElementById('date.new');

var date = new Date(0);
var elSet = document.getElementById('date.set');

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
new Date
modify Date

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:151.0) Gecko/20100101 Firefox/151.0

Browser/OS: Firefox 151 on Mac OS X 10.15

modify Date

1.3M/s

new Date

1.3M/s

View exact numbers

Test name	Executions per second
✓ modify Date	1,270,573 Ops/sec
new Date	1,264,751 Ops/sec

create a new Date object vs modifing an existing one (version: 4)