Run results for: new Date instantiation performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

from 0

49.8M/s

from string

10.3M/s

View exact numbers

Test name	Executions per second
✓ from 0	49,753,692 Ops/sec
from string	10,287,521 Ops/sec

HTML Preparation code:

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

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

from string
/*When writing async/deferred tests, use `deferred.resolve()` to mark test as done*/ new Date("2025-07-10T00:45:42.861Z")
from 0
new Date(0)