Benchmark Run Result for: Map vs Object (R+W)

Test name	Executions per second
Map	218.9 Ops/sec
Object	217.1 Ops/sec

Script Preparation code:

var map = new Map();
var obj = {};
var count = 10000;
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()]; }