Run results for: spread vs concat2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36

Browser: Chrome 76

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
spread	884148.6 Ops/sec
concat	1716739.2 Ops/sec

Tests:

spread

const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]
const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67];
const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523];

const finalArr = [
  ...arr1,
  ...arr2,
  ...arr3
]

​x
 
const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67];const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523];​const finalArr = [  ...arr1,  ...arr2,  ...arr3]

concat

const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]
const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67];
const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523];

const finalArr = arr1.concat(arr2.concat(arr3))

 
const arr1 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67]const arr2 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523,234,62,346,234,62,47,4568,678,96,80,687,067,453,63,456,45,634,563,,89,67,67,56,53,43,36,346,634,63,46,346,3,74,6784678,46,84,56,8,4,5,2,3,4,6,2346,23,46,2346,23,46,6567,8567,8,5678,56,785,6,7,8,5,6,7,85,67];const arr3 = [1,2,3,4,5,6,7,34,4,6,6,7,457,34,57,3457,345,73,457,3457,345,734,573,457,3,25,35,23,52,35,235,23,52,35,235,2,35,235,235,23,523];​const finalArr = arr1.concat(arr2.concat(arr3))