Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) 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 1252299.0 Ops/sec
Obj.keys for loop 901055.1 Ops/sec
Object.keys reduce 779753.8 Ops/sec
For in function 3889502.0 Ops/sec
Object.keys for loop function 1507649.2 Ops/sec
Object.keys reduce function 1183271.8 Ops/sec
Object.keys for loop 2 276317.5 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