Benchmark: Test for vs for in

Script Preparation code:

var obj = {
  'a': 1,
  'b': 1,
  'c': 1,
  'd': 1,
  'e': 1,
  'f': 1,
  'g': 1
};

Tests:

for loop
for(let i = 0; i<10000; i++){ for(let j = 0; j<obj.length; i++){ console.log(obj); } }
For in loop
for(let i = 0; i<10000; i++){ for(let key in obj){ console.log(obj); } }

Rendered benchmark preparation results:

Previous results

Test case name	Result
for loop
For in loop

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36

Browser/OS: Chrome 84 on Windows

Test name	Executions per second
for loop	955.1 Ops/sec
For in loop	0.7 Ops/sec

Test for vs for in (version: 0)