To use React in production, you need NPM and Node.js
- How To Run An App As Admin
- How To Run An Appimage
- Run App Windows
- How To Run An App In Command Prompt
- App Developers Make
To get an overview of what React is, you can write React code directly in HTML.
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But in order to use React in production, you need NPM and Node.js installed.
React Directly in HTML
The quickest way start learning React is to write React directly in your HTML files.
Start by including three scripts, the first two let us write React code in our JavaScripts, and the third, Babel, allows us to write JSX syntax and ES6 in older browsers.
You will learn more about JSX in the React JSX chapter.
Example
Include three CDN's in your HTML file:
This way of using React can be OK for testing purposes, but for production you will need to set up a React environment.
Setting up a React Environment
If you have NPM and Node.js installed, you can create a React application by first installing the create-react-app.
If you've already created the create-react-app you can skip this section.
Install create-react-app by running this command in your terminal:
How To Run An App As Admin
Then you are able to create a React application, let's create one called myfirstreact
.
Run this command to create a React application named myfirstreact
:
The create-react-app will set up everything you need to run a React application.
Run the React Application
Now you are ready to run your first real React application!
How to change the background in imovie. Run this command to move to the myfirstreact
directory:
Run this command to run the React application myfirstreact
:
A new browser window will pop up with your newly created React App! If not, open your browser and type localhost:3000
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The result:
Modify the React Application
So far so good, but how do I change the content?
Look in the myfirstreact
directory, and you will find a src
folder. Inside the src
folder there is a file called App.js
, open it and it will look like this:
Try changing the HTML content and save the file.
Notice that the changes is visible immediately after you save the file, you do not have to reload the browser!
Example
Replace all the content inside the
element.
See the changes in the browser when you click Save.
Notice that we have removed the imports we do not need (logo.svg and App.css).
The result:
What's Next?
Now you have a React Environment on your computer, and you are ready to learn more about React.
How To Run An Appimage
In the rest of this tutorial we will use our Show React tool to explain the various aspects of React, and how they are displayed in the browser.
Run App Windows
If you want to follow the same steps on your computer, start by stripping down the src
folder to only contain two files: index.js
and index.html
, in some builds you might find the index.html in the public folder instead, you should also remove any unnecessary lines of code inside the two files to make them look like the files in the Show React tool below:
How To Run An App In Command Prompt
Example
Click the 'Run Example' button to see the result.
index.js
:
index.html
: