Benchmark: map get vs object get by key

Script Preparation code:

var map = new Map();
var obj = {};

var j = 0;
while (j < 10000) {
  var key = "Key_" + j;
  map.set(key, 5);
  obj[key] = 5;
  j += 1;
}

var stringKey = 'asdfasdjfa;sjfjaklfjklsjklajjjj;jlsjfajdfsfjs;fjsfka';

var i = 0, count = 1000, a;

Tests:

map get
for (i = 0; i < count; i++) { a = map.get('Key_' + i); }
object by key
for (i = 0; i < count; i++) { a = obj['Key_' + i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map get
object by key

Fastest: N/A

Slowest: N/A

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/147.0.0.0 Safari/537.36

Browser/OS: Chrome 147 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
map get	8832.6 Ops/sec
object by key	13703.6 Ops/sec

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Map get VS Map has get2
Map get VS Map has get3
Map.has vs Object hasOwnProperty
Map.has vs Object hasOwnProperty vs direct check v2

map get vs object get by key (version: 1)

map get vs object get by key

Comparing performance of: map get vs object by key

Created: one month ago by: Guest

Jump to the latest result

map get

object by key

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A