Run results for: Switch vs Object Lookup

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Switch

225.9M/s

Object Literal

219.4M/s

View exact numbers

Test name	Executions per second
✓ Switch	225,870,544 Ops/sec
Object Literal	219,375,152 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];