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Run results for: Array.prototype.slice vs spread operator - objects 22

Compare the new ES6 spread operator with the traditional slice() method

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36
Chrome 85
Mac OS X 10.15.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.slice 7.8 Ops/sec
spread operator 6.6 Ops/sec
Script Preparation code:
​x
 
    function fromNumberToObject(id = 0) {
      return {
        id,
        value: id + id,
        name: 'example',
      };
    }
    var list = [...Array(99999999).keys()].map(fromNumberToObject);
​
​
Tests:

  • Array.prototype.slice

     
    const test = list.slice();

  • spread operator

     
    const test = [...list];