MeasureThat.net

Run results for: array of objects shallow clone comparison narrowed

1. concat 2. spread 3. slice 5. Object.values 6. Array.from

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0
Firefox 95
Linux
Desktop
3 years ago
Test name Executions per second
1. concat 710.7 Ops/sec
2. spread 678.5 Ops/sec
3. slice 2269.4 Ops/sec
5. Object values 654.6 Ops/sec
6. Array.from 677.8 Ops/sec
HTML Preparation code:
AخA
 
1
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>
Script Preparation code:
 
arrayOf100kobjects = new Array(100000).fill(1).map((_,index) => ({a: index}));
Tests:

  • 1. concat

     
    const clonedArr = [].concat(arrayOf100kobjects);

  • 2. spread

     
    const clonedArr = [...arrayOf100kobjects];

  • 3. slice

     
    const clonedArr = arrayOf100kobjects.slice();

  • 5. Object values

     
    const clonedArr = Object.values(arrayOf100kobjects);

  • 6. Array.from

     
    const clonedArr = Array.from(arrayOf100kobjects);