Benchmark: Dict vs. Map vs. Array ( complete iteration)

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);
}

var arr = []
for (var i=0; i<50000; i++) {
  arr.push(i);
}

Tests:

Dictionary
let c = 0 for (let key in dict) { c += dict[key]}
Array
let c = 0 for (i=0; i<10000; i+=1) { c += arr[i]}
Map
let c = 0 for (let [key, entry] of map) { c += entry}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Dictionary
Array
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:134.0) Gecko/20100101 Firefox/134.0

Browser/OS: Firefox 134 on Windows

View result in a separate tab

Array

15K/s

Map

2K/s

Dictionary

794/s

View exact numbers

Test name	Executions per second
✓ Array	15,004 Ops/sec
Map	1,707 Ops/sec
Dictionary	794 Ops/sec

Dict vs. Map vs. Array ( complete iteration) (version: 1)

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

Comparing performance of: `Dictionary vs Array vs Map`

Created: one year ago by: Guest

Go to the latest result

Dictionary

Array

Map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Dict vs. Map vs. Array ( complete iteration) (version: 1)

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

Comparing performance of: Dictionary vs Array vs Map

Created: one year ago by: Guest

Go to the latest result

Dictionary

Array

Map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Dictionary vs Array vs Map`