Run results for: falsy vs typeof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

falsy

19.6M/s

typeof

307K/s

View exact numbers

Test name	Executions per second
✓ falsy	19,624,168 Ops/sec
typeof	307,058 Ops/sec

Script Preparation code:

let a = null
let b = null

Tests:

falsy
let a = undefined let b = null if (a) console.log('-') if (b) console.log('-')
typeof
let a = undefined let b = null if (typeof a === 'undefined') console.log('-') if (typeof b === 'undefined') console.log('-')