MeasureThat.net

Run results for: Variable assignement v2

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Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/119.0
Firefox 119
Linux
Desktop
one year ago
Test name Executions per second
Object Assignment 10185250.0 Ops/sec
Object Assignment + condition 10208501.0 Ops/sec
Set assignment 10278274.0 Ops/sec
Set assignment + condition 10246101.0 Ops/sec
Map assignment 10304539.0 Ops/sec
Map assignment + condition 10249774.0 Ops/sec
Script Preparation code:
​x
 
const myVar = 'test'
const mySet = new Set();
const myMap = new Map();
const myObj = {};
​
for(let i = 0; i < 100; i++) {
  const newVar = `${myVar}${i}`;
  mySet.add(newVar);
  myMap.set(newVar, 0);
  myObj[newVar] = 0;
}
​
const length = 100000000;
Tests:

  • Object Assignment

     
    for (let i=0; i < length; i++) {
        myObj.test = 1;
    }

  • Object Assignment + condition

     
    for (let i=0; i < length; i++) {
        if (!myObj.test) myObj.test = 1;
    }

  • Set assignment

     
    for (let i=0; i < length; i++) {
        mySet.add('test');
    }

  • Set assignment + condition

     
    for (let i=0; i < length; i++) {
        if (!mySet.has('test')) mySet.add('test');
    }

  • Map assignment

     
    for (let i=0; i < length; i++) {
        myMap.set('test', 1);
    }

  • Map assignment + condition

     
    for (let i=0; i < length; i++) {
        if (!myMap.get('test')) myMap.set('test', 1);
    }