Run results for: Check function. typeof vs constructor + null check

Difference between typeof(a => {}) === 'function' and (a => {}).constructor === Function

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
one year ago
typeof
73.7M/s
constructor
65.6M/s
View exact numbers
Test name Executions per second
✓ typeof 73,673,848 Ops/sec
constructor 65,555,648 Ops/sec
Script Preparation code:
Tests: