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Run results for:
WeakMap vs Symbol Property
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Embed Benchmark Result
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser:
Chrome 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
WeakMap set
14110856.0 Ops/sec
Symbol Property set
14135333.0 Ops/sec
WeakMap get
14151022.0 Ops/sec
Symbol Property get
13571761.0 Ops/sec
Script Preparation code:
var to0 = {}; var to1 = {}; var wm = new WeakMap(); var sy = Symbol(); wm.set(to1, 1); to1[sy] = 1;
Tests:
WeakMap set
wm.set(to0, 1);
Symbol Property set
to0[sy] = 1;
WeakMap get
let r = wm.get(to1);
Symbol Property get
let r = to1[sy];