Run results for: isFinite vs typeof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36

Browser: Chrome 100

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
isFinite	535845.6 Ops/sec
typeof === "number"	1129057.2 Ops/sec

Script Preparation code:

varsToCheck = [3, 3.14, "some string", null, undefined];
count = 0;

Tests:

isFinite
varsToCheck.forEach(function(v){ if(Number.isFinite(v)) { count++ } });
typeof === "number"
varsToCheck.forEach(function(v){ if(typeof v === "number") { count++ } });