Run results for: undefined vs typeof vs !!

undefined vs typeof vs !!

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6.1 Safari/605.1.15
Safari 16
Mac OS X 10.15.7
Desktop
one year ago
Benchmark.js
typeof
4.0M/s
void 0;
3.9M/s
!!
3.5M/s
strict
1.9M/s
View exact numbers
Test name Executions per second
✓ typeof 3,969,760 Ops/sec
void 0; 3,940,976 Ops/sec
!! 3,451,021 Ops/sec
strict 1,888,734 Ops/sec
Script Preparation code:
Tests: