Components are independent and reusable bits of code. They serve the same purpose as JavaScript functions, but work in isolation and return HTML. Components come in two types, Class components and Function components, in this tutorial we will concentrate on Function components.
Note: Always start component names with a capital letter.
React treats components starting with lowercase letters as DOM tags. For example, "div" represents an HTML div tag, but "EmployeeDetails" represents a component and requires Welcome to be in scope.
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