Run details:
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36
Chrome 53
Windows
Other
8 years ago
Test name Executions per second
For in 1161228.8 Ops/sec
Obj.keys for loop 883645.2 Ops/sec
Object.keys reduce 782811.6 Ops/sec
For in function 4244266.0 Ops/sec
Object.keys for loop function 1421356.0 Ops/sec
Object.keys reduce function 1155352.2 Ops/sec
Object.keys for loop 2 253607.8 Ops/sec
Script Preparation code:
Tests:
  • For in

  • Obj.keys for loop

  • Object.keys reduce

  • For in function

  • Object.keys for loop function

  • Object.keys reduce function

  • Object.keys for loop 2