Run results for: Jump vs switch case v2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Browser: Firefox 62

Operating system: Linux

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
switch case	271.8 Ops/sec
jump table	279.3 Ops/sec
jump table (arrow functions)	275.7 Ops/sec
jump table (Map)	66.2 Ops/sec

Script Preparation code:

// Switch
function thing(j)
{
  switch(j)
  {
    case 0:
      return "rah";
    case 1:
      return "lah";
    case 2:
      return "sah";
    case 3:
      return "blah";
  }
}

// Jumptable
function rah()
{
  return "rah";
}

function lah()
{
  return "lah";
}

function sah()
{
  return "sah";
}

function blah()
{
  return "blah";
}

var jumpTable = [rah, lah, sah, blah];

// Arrow functions
var jumpTableArrow = [() => "rah", () => "lah", () => "sah", () => "blah"]

// Map
var jumpTableMap = new Map(jumpTableArrow.map((fun, i) => [i, fun]))

Tests:

switch case
for(let i = 0; i < 100000; i++) { for(let j = 0; thing(j) != "blah"; j++) { } }
jump table
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTable[j]() != "blah"; j++) { } }
jump table (arrow functions)
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTableArrow[j]() != "blah"; j++) { } }
jump table (Map)
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTableMap.get(j)() != "blah"; j++) { } }

Run results for: Jump vs switch case v2

Updated to separate function creation from test. Also added in alternatives for arrow functions and Map

switch case

jump table

jump table (arrow functions)

jump table (Map)