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In this video, we'll initialize the project using Create React App. Then, set up assets like styles, images and template code.
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Normally when starting a React project,
0:00
I use Create React App to make
the boilerplate files and code I need.
0:02
We have a workshop at Treehouse on using
Create React App to start a project, so
0:05
feel free to view that content,
if you haven't yet.
0:09
I put a link to the workshop
in the teacher's notes.
0:12
You can also use Create React App to start
the app for this course if you want.
0:14
Now, things change in the JavaScript
world fairly quickly.
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So I've taken an extra precaution to
make sure you'll be able to complete
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this course, even if Create React App
changes from the time I'm recording this.
0:25
So, in the teacher's notes,
I've provided a folder you can start from.
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Just download it, unzip it,
and run npm install.
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This just ensures minor changes
won't break the whole app.
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Once you've run npm start to
start the development server,
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the server should open a page
in your default browser.
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And you'll see this default screen
that Create React App created for you.
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Now let's look at the assets
we're going to be working with.
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And you'll need to download them
from a link in the teacher's notes.
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Inside the folder, there's an index.html
file and a CSS file inside the CSS folder.
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If I open index.html in the browser,
you can see we have a styled,
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static version of the app.
1:05
Now, none of these
buttons do anything yet,
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because it will be our job to
bring them to life with React.
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These are all just placeholders
we can use to guide our work.
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So I'm going to set up the project
from scratch using Create React App.
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Feel free to follow along, or again,
use the project folder I've provided.
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In my terminal,
I'll create he project with the command
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create-react-app, and
I'll name the project rsvp.
1:29
Once the project is created,
I'll navigate inside the rsvp directory,
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then run npm start to start
the development server.
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First, let's move the static
assets like the stylesheet and
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images over to the rsvp
React app we just started.
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I have both the assets folder and
the rsvp folder open here.
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So I'll start by copying the favicon
from the assets folder into
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the public folder to replace
the one Create React App supplies.
2:03
Notice I copied the file
instead of moving it.
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It's better to leave the original
assets intact in case I mess up
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something later and
I need a fresh copy again.
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So I'll copy all the assets for
this reason.
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Next, I'll copy the images folder
into the app source folder.
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Now, we'll copy the HTML and styles.
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For the styles,
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we can copy the CSS file inside
the CSS folder into the source folder.
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And we want this to be the app styles,
so we'll rename it to index.css.
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But first,
let's delete the existing index.css file.
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Then we'll rename style.css to index.css.
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And I'll go ahead and drag the index.html
file over to the source folder too.
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Because we'll need to open this
file up and copy out some parts.
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Next, I'll open the project
folder in a text editor so
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I can see the contents of index.html.
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I'm using Atom, but
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feel free to use whatever text
editor you feel comfortable with.
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So first, I'll open index.html
inside the source folder.
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And from here,
I wanna copy the contents of the body,
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which is a div with the class app.
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So I'll select and copy the div and
all of its contents.
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Then in the main app component,
which is inside the file app.js,
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I'll render the content I just
copied from my index.html file by
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replacing the div with the class name app.
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I'll give this file a save.
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And since we've added new
files to our project,
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let's go back to the terminal and
stop and restart the app.
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So now if you look at the browser
where the app is rendered,
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you can see we're getting an error.
4:00
Well, that's because we've pasted
HTML where React expects JSX,
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and the two are not exactly the same.
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So this error is occurring because
the JSX expects any elements
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with no closing tag to self close.
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For example, the input elements have
no closing tag so I'll add a space and
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a slash just before the angle
bracket at the end of each input.
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So first here on line 13, then on line 21.
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Scroll down to the input on line 44.
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The one below on 51,
and the one on line 58.
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I'll give it a save, and
now we're getting a different error.
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The CSS file can't find the image file.
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Well, the assets folder had a different
structure than our app does now so
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we just need to update the URLs and
the CSS file.
4:59
So I'll open up index.css and
scroll down to line 98, and
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instead of having to go up a folder
to find the images directory,
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the CSS file just needs to
look in the current directory.
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So I'll remove the first dot from the URL.
5:16
After saving, we have something close
to what we wanna see in the browser.
5:22
It looks like the styling is a little off
and we're not getting the right fonts yet.
5:27
Looks like our CSS class
rules aren't getting applied.
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Well, that's because JSX expects
class name attributes rather
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than class attributes
to target CSS classes.
5:40
And if you wanna explore JSX a little
more, check the teacher's notes for links.
5:43
So here, in the app component,
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I'm gonna change these class
attributes to className attributes.
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And to do that,
I'll do a quick Find and Replace All So
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here, I'll replace class with className.
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And I don't wanna replace the JavaScript
class keyword here with name,
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so I'll change this one back to class,
give this a save,
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and now the styles look
a lot better in the browser.
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Next, let's load our fonts.
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So, I'll go back to index.html and
copy the links to
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the fonts here, Lines 7 and 8.
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Then I'll go over to the public
directory and open up index.html and
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I'll paste them into this file
right above the title element.
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And while we're here,
let's change the title to rsvp.
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Switching back to the browser,
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you can see the fonts are now loading and
the title has updated, great.
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So now we have everything we need
from this index.html file in
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the source folder, so I'll just delete it.
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And I'll also delete this image
file that Create React App made by
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default, logo.svg.
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And since we won't be using this image,
let's remove where we import it here in
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App.js If I switch over to the browser,
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I see that there is a slight
issue with our styles.
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Notice how everything here is centered.
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Well, that's because we're getting
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some styles in addition
to the ones we imported.
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This style is coming from the app
component CSS file here in App.css,
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which Create React App used to style the
page we saw when we first started the app.
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So we wanna remove them from our project.
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So here in App.css, I'll select and
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delete every rule in this file and
give it a save.
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And the stylesheet is still being loaded
by the app component here on line 2.
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You can remove this line if you want to,
but I'll leave it here just to remind you
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how it's connected, in case you wanna play
with overriding the styles on your own.
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So now in the browser,
you can see the page is looking perfect.
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If you happen to have your dev
tools console open though,
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you'll see a couple of errors.
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Now, these are fine for now.
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They're just saying that we haven't
connected some of our inputs to be handled
8:34
by React, and
these will go away as we code the app.
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So we're in great shape to start making
this app into an interactive app.
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Before we do though,
let's plan our components out and
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think about how data will
move through the app.
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