Run results for: BT Switch vs Object Literal

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.87 Safari/537.36

Browser: Chrome 76

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Switch	80943.8 Ops/sec
Object Literal	79118.1 Ops/sec

Script Preparation code:

num = Math.floor(Math.random() * 20);

Tests:

Switch
function getVal(key) { switch (key) { case 1: return 'A' case 2: return 'B' case 3: return 'C' case 4: return 'A' case 5: return 'A' case 6: return 'A' case 7: return 'A' case 8: return 'A' case 9: return 'A' case 10: return 'A' case 11: return 'A' case 12: return 'B' case 13: return 'C' case 14: return 'A' case 15: return 'A' case 16: return 'A' case 17: return 'A' case 18: return 'A' case 19: return 'A' case 20: return 'A' } } console.log(getVal(num))
Object Literal
var objLiteral = { 1: 'A', 2: 'B', 3: 'C', 4: 'A', 5: 'A', 6: 'A', 7: 'A', 8: 'A', 9: 'A', 10: 'A', 11: 'A', 12: 'B', 13: 'C', 14: 'A', 15: 'A', 16: 'A', 17: 'A', 18: 'A', 19: 'A', 20: 'A', } console.log(objLiteral[num])