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docs/tut/crash-course/7-stateful-component.md
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# Stateful Components
A stateful component is a component that can update in reponse to data.
A stateful component is a component that stores some data internally.
Stateful components in Vide are created using sources and effects - sources to
store the data, and effects to display the data.
@ -27,13 +27,18 @@ local function Counter()
return instance
end
mount(Counter, game.StarterGui)
```
Above is an example of a counter component, that when clicked, will increment
its internal count, and automatically update its text to reflect that count.
Each instance of `Counter()` will maintain its own independent count, since the
count source is created inside the scope of the component.
count source is created inside the component.
We use `mount()` to create the counter within a reactive scope, which also takes
a second argument to parent the counter to another instance.
## External State