Run results for: void 0 vs undefined vs variable containing undefined

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:148.0) Gecko/20100101 Firefox/148.0

Browser: Firefox 148

Operating system: Linux

Device Platform: Desktop

Date tested: 4 months ago

void 0

971.7M/s

constant containing undefined

965.9M/s

undefined

964.2M/s

View exact numbers

Test name	Executions per second
✓ void 0	971,742,080 Ops/sec
constant containing undefined	965,942,080 Ops/sec
undefined	964,218,944 Ops/sec

Script Preparation code:

var a = 1, u = void 0;

Tests: