Benchmark: Dict vs. Map - MeasureThat.net

Script Preparation code:

var dict= {}
for (var i=0; i<50000; i++) {
  dict['abc_'+i] = i;
}

var map= new Map()
for (var i=0; i<50000; i++) {
  map.set('abc_'+i, i);
}

Tests:

Dictionary
let c = 0 for (i=2000; i<10000; i+=115) { c += dict['abc_'+i]}
Map
let c = 0 for (i=2000; i<10000; i+=115) { c += map.get('abc_'+i)}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Dictionary
Map

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser/OS: Firefox 135 on Windows

View result in a separate tab

Test name	Executions per second
Dictionary	184324.2 Ops/sec
Map	186131.7 Ops/sec

Related benchmarks:

map vs. for vs. for in vs. forEach
Map vs Object GetAndSet largeset
Object VS Map VS Array
array vs int32array vs map fixed
Map vs Object - More items
Map vs Object - More items2
Map vs Object - More items3
Map vs Object - More items4
Map vs Object - More items6

Dict vs. Map (version: 1)

Large dictionary - how worse is it from array with direct reference? And how does Map perform?

Comparing performance of: Dictionary vs Map

Created: one year ago by: Guest

Jump to the latest result

Dictionary

Map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A