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

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:94.0) Gecko/20100101 Firefox/94.0

Browser: Firefox 94

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
null strict	896941120.0 Ops/sec
undefined strict	802293760.0 Ops/sec
null loose	818758848.0 Ops/sec
undefined loose	814582336.0 Ops/sec

Script Preparation code:

var x;

AخA
 
var x;

Tests:

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