Why does looping over the properties of an object and using tab autocomplete in Node Js result in a different list of properties for an object?

Asked Jul 23 '20 at 03:50

Active Jul 23 '20 at 03:50

Viewed 24 times

For example, I'm trying to find all of the methods and properties associated with the events.EventEmitter class. Using a for loop such as

for(i in events.EventEmitter) {
    console.log(i);
}

results in a much smaller and incomplete list of properties for the class... However, if I just type into the REPL 'events.EventEmitter.' and hit tab twice, it brings up the much larger, complete list.

Why is this? And where do all of these extra hidden properties come from?

asked Jul 23 '20 at 03:50

Ayden Cook

1

`in` iterates only Enumerable properties. – Keith Jul 23 '20 at 03:55
@Keith How can I get all of the properties, even if they aren't enumerable or owned by the object? – Ayden Cook Jul 23 '20 at 05:04
1

You could try. https://stackoverflow.com/questions/8024149/is-it-possible-to-get-the-non-enumerable-inherited-property-names-of-an-object – Keith Jul 23 '20 at 05:18

Why does looping over the properties of an object and using tab autocomplete in Node Js result in a different list of properties for an object?

0 Answers0