Benchmark: For Of vs Spread

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

// Mock handler sets
const navigationHandlers = Array.from({ length: 50000 }, (_, i) => [`nav-${i}`, () => i]);
const titlebarHandlers   = Array.from({ length: 50000 }, (_, i) => [`title-${i}`, () => i]);
const tabHandlers        = Array.from({ length: 50000 }, (_, i) => [`tab-${i}`, () => i]);

function createSyncHandlerMap_loops() {
  const map = new Map();

  for (const [msg, h] of navigationHandlers) map.set(msg, h);
  for (const [msg, h] of titlebarHandlers)   map.set(msg, h);
  for (const [msg, h] of tabHandlers)        map.set(msg, h);

  return map;
}

function createSyncHandlerMap_spread() {
  return new Map([
    ...navigationHandlers,
    ...titlebarHandlers,
    ...tabHandlers,
  ]);
}

Tests:

Using For-Of Loops
const map = createSyncHandlerMap_loops();
Using Spread
const map = createSyncHandlerMap_spread();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Using For-Of Loops
Using Spread

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0

Browser/OS: Firefox 143 on Windows

View result in a separate tab

Using For-Of Loops

23/s

Using Spread

23/s

View exact numbers

Test name	Executions per second
✓ Using For-Of Loops	23 Ops/sec
Using Spread	23 Ops/sec

For Of vs Spread (version: 1)

Comparing the spread operater vs a for - of loop

Comparing performance of: `Using For-Of Loops vs Using Spread`

Created: 10 months ago by: Registered User

Go to the latest result

Using For-Of Loops

Using Spread

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

For Of vs Spread (version: 1)

Comparing the spread operater vs a for - of loop

Comparing performance of: Using For-Of Loops vs Using Spread

Created: 10 months ago by: Registered User

Go to the latest result

Using For-Of Loops

Using Spread

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Using For-Of Loops vs Using Spread`