Run results for: Comparing null vs undefined 2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0

Browser: Firefox 95

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
null strict	868274560.0 Ops/sec
undefined strict	754924736.0 Ops/sec
null loose	854111488.0 Ops/sec
undefined loose	815200704.0 Ops/sec

Script Preparation code:

var x;

Tests:

null strict
x === null;
undefined strict
x === undefined;
null loose
x == null;
undefined loose
x == undefined;