Array of objects loop for vs foreach vs map vs for..of + slice vs for

3 months ago
User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Test name Executions per second
foreach 35141.8 Ops/sec
for 17393.8 Ops/sec
map 33305.4 Ops/sec
for..of 35130.4 Ops/sec
slice + [x, ...y] 25448.0 Ops/sec
for (no slice) 11480.2 Ops/sec
for + push 10317.5 Ops/sec
slice + [x, ...y] v2 25267.8 Ops/sec
slice + [x, ...y] v3 25328.0 Ops/sec
Script Preparation code:
Tests:
  • foreach

  • for

  • map

  • for..of

  • slice + [x, ...y]

  • for (no slice)

  • for + push

  • slice + [x, ...y] v2

  • slice + [x, ...y] v3

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