Run results for: Switch vs Object Lookup

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Linux

Device Platform: Desktop

Date tested: 2 months ago

Benchmark engine: Benchmark.js

Object Literal

2298.8M/s

Switch

1646.7M/s

View exact numbers

Test name	Executions per second
✓ Object Literal	2,298,839,808 Ops/sec
Switch	1,646,745,472 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];