Run results for: if(typeof <var> ===undefined) vs if(<var>)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36

Browser: Chrome 98

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
no typeof	4075052.0 Ops/sec
typeof	4090659.8 Ops/sec

Script Preparation code:

var a=undefined

AخA
 
var a=undefined

Tests:

no typeof
var a=undefined if (a===undefined) true
var a=undefined
if (a===undefined) true
typeof
var a=undefined if(typeof a===undefined) true
var a=undefined
if(typeof a===undefined) true