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React doesn't use a special templating
language like other front end frameworks

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and libraries do.

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React components are written in plain
JavaScript with the help of JSX, and

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they contain the logic required to
display a small part of your UI.

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Creating a React component
is a two step process.

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First you define the component as
either a JavaScript function or class.

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Then, you use and
display the component with a JSX tag.

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We're going to built the main pieces of
the score board at first like, the header,

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player, and counter.

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So let's begin by defining
the header component.

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The easiest way to define a component
is to write a JavaScript function.

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In app.js, I'l replaced all my
constant variables with a function

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named Header Notice the capital H and
the function name.

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React components are required to
begin with an upper case letter.

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You'll learn exactly why in the next video
when we use and display this component.

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But it also helps to know that
the function is defining a component

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when you see it.

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So Header is going to
return react elements

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describing what should appear
on the screen using JSX.

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To write my JSX across multiple lines,
I'll add a space and

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I set parenthesis after
the return keyword.

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And you can read more about
why we add the space and

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parenthesis in the teacher's notes.

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Next, we'll return a header element.

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I'll use JSX to add a set of opening and
closing header tags.

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Inside the header,
let's add an h1 for the title.

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And below the h1 add a span to
display the score board's stats.

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We're going to display the text for
the title and

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stats dynamically in a later video.

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For now, let's include static
place holder text inside the h1.

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I'll write Scoreboard,
and inside the span,

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let's add Players: and one player for now.

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Now, let's give a span a class of stats
so, that it can be styled with CSS.

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Again, in React, we use className
as the attribute instead of class.

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All right,
our header component is all set.

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In the next video, we'll render
it to the page using a JSX tag.