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Run results for: array shallow clone comparison narrowed

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

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Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36
Chrome 96
Linux
Desktop
3 years ago
Test name Executions per second
1. concat 3866.0 Ops/sec
2. spread 3921.3 Ops/sec
3. slice 3988.2 Ops/sec
5. Object values 2578.2 Ops/sec
6. Array.from 3944.5 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:
 
arrayOf1kkNumbers = new Array(100000).fill(1).map((_,index) => index);
Tests:

  • 1. concat

     
    const clonedArr = [].concat(arrayOf1kkNumbers);

  • 2. spread

     
    const clonedArr = [...arrayOf1kkNumbers];

  • 3. slice

     
    const clonedArr = arrayOf1kkNumbers.slice();

  • 5. Object values

     
    const clonedArr = Object.values(arrayOf1kkNumbers);

  • 6. Array.from

     
    const clonedArr = Array.from(arrayOf1kkNumbers);