Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
create a new Date object vs modifing an existing one
(version: 4)
How expensive is creation of a Date instance.
Comparing performance of:
new Date vs modify Date
Created:
19 days ago
by:
Registered User
Jump to the latest result
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:
new Date
now = new Date(); elNow.innerText = now;
modify Date
date.setTime(Date.now()); elSet.innerText = date;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
new Date
modify Date
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
18 days 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
View result in a separate tab
Embed
Embed Benchmark Result
Test name
Executions per second
new Date
1264750.9 Ops/sec
modify Date
1270573.2 Ops/sec
Related benchmarks:
Date.now() vs +new Date()
Date.now() vs new Date().getTime() vs +new Date()
Date.now() vs new Date()
Date.now() vs new Date().getTime(q)
Date.now() vs new Date().getTime() vs + new Date
Date.now() vs new Date().toISOString()
Date.now() vs +new Date() test
new Date vs date.setTime
Date.now() vs new Date().getTime() 2
Comments
Confirm delete:
Do you really want to delete benchmark?