Benchmark: Get index with indexOf or with map

Script Preparation code:

var array = [];
for ( var i=0; i < 300; ++i ) {
  	array.push({ index: i, text: `${i}` });
}
var map = new Map();
array.forEach((item, index) => map.set(item, index));

Tests:

indexOf
const toFindIndex = Math.floor(Math.random() * 300) array.indexOf(array.indexOf((v) => v === v[toFindIndex]));
map
const toFindIndex = Math.floor(Math.random() * 300) map.get(toFindIndex)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexOf
map

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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser/OS: Chrome 120 on Linux

View result in a separate tab

Test name	Executions per second
indexOf	3420064.0 Ops/sec
map	7279314.0 Ops/sec

Get index with indexOf or with map (version: 0)

Comparing performance of: indexOf vs map

Created: one month ago by: Guest

Jump to the latest result

indexOf

map

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A