Run results for: for in vs for of

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:49.0) Gecko/20100101 Firefox/49.0

Browser: Firefox 49

Operating system: Linux

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
for in	1627.6 Ops/sec
for of	1746.3 Ops/sec

Script Preparation code:

var basicRoom = {a: 1, b: 2, c: 3};
var obj = {N0E0: basicRoom, N1E2: basicRoom, S1E3: basicRoom, S4E4: basicRoom, N5W3: basicRoom, S22W45: basicRoom, N40W20: basicRoom, N15E15: basicRoom, S15W15: basicRoom};

Tests:

for in
for (var x in obj) { console.log(x); }
for of
for (var x of Object.keys(obj)) { console.log(x); }