Run results for: Array.prototype.slice vs spread operator - objects - 30k

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36

Browser: Chrome 85

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Array.prototype.slice	159025.1 Ops/sec
spread operator	135973.3 Ops/sec

Script Preparation code:

    function fromNumberToObject(id = 0) {
      return {
        id,
        value: id + id,
        name: 'example',
      };
    }
    var list = [...Array(30000).keys()].map(fromNumberToObject);

Tests:

Array.prototype.slice
list.slice();
spread operator
[...list];

Run results for: Array.prototype.slice vs spread operator - objects - 30k

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

Array.prototype.slice

spread operator