JS function properties and memory

Question

Let's say I have a function with a static property, for example:

function Test() {}

Test.someProp = bigObject;

I'm wondering if bigObject will always be in memory or it will gc sometime?

Once nothing has a reference to Test anymore, it should be GC'd, including the bigObject, as long as nothing else has a reference to bigObject either — CertainPerformance
– CertainPerformance, Commented Sep 21, 2018 at 10:23

JohnPan · Accepted Answer · 2018-09-21 10:24:54Z

1

It will never be collected as long as someProp is alive (has a reference). If you delete Test.someProp or delete or empty the whole Test then it will be gCollected

answered Sep 21, 2018 at 10:24

JohnPan

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6 Comments

undefined Over a year ago

So what you are saying is that if the code will stay like this, it will never be collected?

undefined Over a year ago

@CertainPerformance doesn't think like you, how can I know who's right?

JohnPan Over a year ago

Study! But really, he does say the same thing.

undefined Over a year ago

"Once nothing has a reference to Test anymore" - I'm not sure he says the same thing. @CertainPerformance can you clarify please?

JohnPan Over a year ago

Test belongs to global scope, so it already has a reference there.

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