Run results for: if undefined comparison

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 OPR/109.0.0.0

Browser: Opera 109

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

case 1

54.2M/s

case 2

49.7M/s

case 3

4.5M/s

View exact numbers

Tests:

case 1
const obj = { 2: true, 7: true } if (obj[3]) { } obj[3] = true;
case 2
const obj = { 2: true, 7: true } if (typeof obj[3] !== 'undefined') { } obj[3] = true;
case 3
const obj = { 2: true, 7: true } if (obj[3] !== undefined) { } obj[3] = true;