MeasureThat.net

Run results for: WeakMap vs Symbol Property v2

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:107.0) Gecko/20100101 Firefox/107.0
Firefox 107
Windows
Desktop
2 years ago
Test name Executions per second
WeakMap set 10401262.0 Ops/sec
Symbol Property set 750382400.0 Ops/sec
WeakMap get 6364177.0 Ops/sec
Symbol Property get 1079940992.0 Ops/sec
WeakMap has 6509996.0 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);