Run results for: if-else vs switch vs object 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

if-else

6.5M/s

switch

6.5M/s

object

2.2M/s

object - rerun

2.1M/s

View exact numbers

Test name	Executions per second
✓ if-else	6,515,722 Ops/sec
switch	6,495,347 Ops/sec
object	2,152,254 Ops/sec
object - rerun	2,133,375 Ops/sec

Script Preparation code:

class Host {
    A = 1;
    B = 2;
    C = 3;
}

var host = new Host();

var x = Math.floor(Math.random() * 3);

function testObject(h, p) {
    const obj = {
        [h.A]: 1,
        [h.B]: 2,
        [h.C]: 3,
    }

    return obj[p];
}


function testIfElse(h, p) {
    var v = 0;
    if (p === h.A) {
        v = 1;
    } else if (p === h.B) {
        v = 2;
    } else if (p === h.C) {
        v = 3;
    }
    return v;
}

function testSwitch(h, p) {
    let v = 0;
    switch (p) {
        case h.A:
            v = 1;
            break;
        case h.B:
            v = 2;
            break;
        case h.B:
            v = 3;
            break;
    }
    return v;
}

Tests:

object
testObject(host, x);
if-else
testIfElse(host, x);
switch
testSwitch(host, x)
object - rerun
testObject(host, x)