Benchmark: switch on object references

Script Preparation code:

var AAA = {key: "AAA", idx: 0};
var BBB = {key: "BBB", idx: 1};
var CCC = {key: "CCC", idx: 2};
var DDD = {key: "DDD", idx: 3};
var EEE = {key: "EEE", idx: 4};
var arr = [AAA, BBB, CCC, DDD, EEE];
for (let i = 5; i < 1000; i++) {
  arr[i] = arr[i % 5];
}

Tests:

switch on string
var sum = 0; for (let i = 0; i < arr.length; i++) { switch (arr[i].key) { case "AAA": sum += 1; break; case "BBB": sum += 2; break; case "CCC": sum += 3; break; case "DDD": sum += 4; break; case "EEE": sum += 5; break; } }
switch on object
var sum = 0; for (let i = 0; i < arr.length; i++) { switch (arr[i]) { case AAA: sum += 1; break; case BBB: sum += 2; break; case CCC: sum += 3; break; case DDD: sum += 4; break; case EEE: sum += 5; break; } }
switch on number
var sum = 0; for (let i = 0; i < arr.length; i++) { switch (arr[i].idx % 5 | 0) { case 0: sum += 1; break; case 1: sum += 2; break; case 2: sum += 3; break; case 3: sum += 4; break; case 4: sum += 5; break; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
switch on string
switch on object
switch on number

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser/OS: Firefox 131 on Linux

View result in a separate tab

switch on object

746K/s

switch on number

519K/s

switch on string

336K/s

View exact numbers

Test name	Executions per second
✓ switch on object	745,755 Ops/sec
switch on number	519,285 Ops/sec
switch on string	335,853 Ops/sec

switch on object references (version: 2)

Comparing performance of: `switch on string vs switch on object vs switch on number`

Created: one year ago by: Registered User

Go to the latest result

switch on string

switch on object

switch on number

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

switch on object references (version: 2)

Comparing performance of: switch on string vs switch on object vs switch on number

Created: one year ago by: Registered User

Go to the latest result

switch on string

switch on object

switch on number

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `switch on string vs switch on object vs switch on number`