Spread vs Concat - size agnostic

Benchmark created by meeroslav on July 13, 2020

Setup

const array1 = [];
  const array2 = [];
  const array3 = [];
  const array4 = [];
  
  for (let i = 0; i < 10; ++i) {
      array1.push(i);
  }
  for (let i = 23; i < 29; ++i) {
      array2.push(i);
  }
  for (let i = 0; i < 10000; ++i) {
      array3.push(i);
  }
  for (let i = 23000; i < 37000; ++i) {
      array4.push(i);
  }

Test runner

const sum = [ ...array1, ...array2 ];

const sum = array1.concat(array2);

const sum = [ ...array3, ...array4 ];

const sum = array3.concat(array4);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published by meeroslav on July 13, 2020