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Run results for:
Benchmark javascript Object vs Map
Benchmark javascript Object vs Map
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Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.7.1
Device Platform:
Mobile
Date tested:
5 months ago
Test name
Executions per second
Object Write
1501797.1 Ops/sec
Map Write
120117.4 Ops/sec
Object Read
13355.4 Ops/sec
Map Read
9085.8 Ops/sec
Script Preparation code:
var size = 1000 var map = new Map() var object = {} var emptyMap = new Map() var emptyObject = {} for (var i = 0; i < size; i++) { map.set(i, i) object[i] = i }
Tests:
Object Write
for (var i=0; i<size; i++) { emptyObject[i] = i }
Map Write
for (var i=0; i<size; i++) { emptyMap.set(i,i) }
Object Read
for (var key in object) { a = object[key] }
Map Read
for (var [key, value] of map) { a = map.get(key) }