Benchmark: Switch vs Prepared Object Literal vs Prepared Array

Script Preparation code:

var objLiteral = {
  0: function() {
    console.log('A');
  },
  1: function() {
    console.log('B');
  },
  2: function() {
    console.log('C');
  }
}

var arrayLiteral = [
  function() {
    console.log('A');
  },
  function() {
    console.log('B');
  },
  function() {
    console.log('C');
  }
];

function usingSwitch(c) {
  switch (c) {
    case 0: console.log('A'); break;
    case 1: console.log('B'); break;
    case 2: console.log('C'); break;
  }
}

Tests:

Switch
usingSwitch(Math.floor(Math.random() * 3))
Object Literal
objLiteral[Math.floor(Math.random() * 3)]();
Array Literal
arrayLiteral[Math.floor(Math.random() * 3)]();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Switch
Object Literal
Array Literal

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Switch	335585.4 Ops/sec
Object Literal	341492.9 Ops/sec
Array Literal	338012.6 Ops/sec

Switch vs Prepared Object Literal vs Prepared Array (version: 0)

Comparing performance of: Switch vs Object Literal vs Array Literal

Created: 3 years ago by: Registered User

Jump to the latest result

Switch

Object Literal

Array Literal

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A