Benchmark: Map vs Object (R+W) 100k

Script Preparation code:

var map = new Map();
var obj = {};
var count = 100000;
var i = 0, a;

Tests:

Map
for (i = 0; i < count; i++) { map.set((i * 10000).toString(), i); } for (i = 0; i < count; i++) { a = map.get((i * 10000).toString()); }
Object
for (i = 0; i < count; i++) { obj[(i * 10000).toString()] = i; } for (i = 0; i < count; i++) { a = obj[(i * 10000).toString()]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Map
Object

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Safari/605.1.15

Browser/OS: Safari 14 on Mac OS X 10.15.7

Test name	Executions per second
Map	12.5 Ops/sec
Object	9.9 Ops/sec

Map vs Object (R+W) 100k (version: 0)