Run results for: Switch vs Object Lookup

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.42

Browser: Chrome 107

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Switch	15163043.0 Ops/sec
Object Literal	14635052.0 Ops/sec

Script Preparation code:

var str = 'abc';
str = str.charAt(Math.floor(Math.random() * 3));

Tests:

Switch
switch (str) { case 'a': return 'A'; case 'b': return 'B'; case 'c': return 'C'; }
Object Literal
var objLiteral = { a: 'A', b: 'B', c: 'C' } objLiteral[str];