MeasureThat.net

Run results for: WeakMap vs Symbol Property v2

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Run details:
Mozilla/5.0 (Linux; Android 12; M2101K9G) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Mobile Safari/537.36
Chrome Mobile 107
Android
Mobile
2 years ago
Test name Executions per second
WeakMap set 2677249.5 Ops/sec
Symbol Property set 2861349.0 Ops/sec
WeakMap get 2725366.5 Ops/sec
Symbol Property get 2871802.5 Ops/sec
WeakMap has 2597251.8 Ops/sec
Script Preparation code:
AخA
 
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];

  • WeakMap has

     
    let r = wm.has(to1);