Run results for: undefined vs typeof vs !!

undefined vs typeof vs !!

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Chrome 132
Mac OS X 10.15.7
Desktop
one year ago
Benchmark.js
!!
5.0M/s
typeof
4.9M/s
void 0;
4.2M/s
strict
2.8M/s
View exact numbers
Test name Executions per second
✓ !! 5,043,976 Ops/sec
typeof 4,947,686 Ops/sec
void 0; 4,235,728 Ops/sec
strict 2,808,544 Ops/sec
Script Preparation code:
Tests: