How does FindFirstChildOfClass() work?

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#1

can anyone explain FindFirstChildOfClass? how does it actually work?

#2

It returns the first child of an instance whose ClassName matches the specified class name. If no matching child is found, it returns nil.
Example:

:FindFirstChildOfClass("Humanoid")

This will find the first child that is a Humanoid. (It doesn’t accept names, only class names)

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#3

It finds the first child of an instance with the ClassName being strictly the passed class, while ignoring inheritance
image
workspace.stored:FindFirstChildOfClass("BasePart") will return nil, as the ClassName of part is “Part”, it just inherits functions from BasePart, you would have to do workspace.stored:FindFirstChildOfClass("Part") to actually get the part.

The only difference between this and FindFirstChildWhichIsA, is that this ignores inheritance.

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#4

So if I have 10 parts parented under workspace and then I typed workspace:FindFirstChildOfClass("Part"), does that reference every Part in the workspace? Or does it reference the first Part in order?

#5

No, it will only refer to the first Part it finds.

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#6

Last question.

Is it really that important or should I use FindFirstChild instead?

#7

If you want to look for specific class, use FindFirstChildOfClass, if you want to look for specific instance with its name, use FindFirstChild.

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#8

FindFirstChild is used with names, while FindFirstChildOfClass and FindFirstChildWhichIsA is used with ClassNames, they aren’t the same.

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#9

Thank both of y’all. I do appreciate your help.

I don’t know which post to mark as the solution honestly.

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#10

No problem.

Mark the post that actually helped you as a solution.

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