In up-to-date implementations of ES, you can use Object.entries
:
for (const [key, value] of Object.entries(obj)) { }
or
Object.entries(obj).forEach(([key, value]) => ...)
If you just want to iterate over the values, then use Object.values:
for (const value of Object.values(obj)) { }
or
Object.values(obj).forEach(value => ...)