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First Encounter with React

You can build a solid foundation in React, along with the basics of JavaScript and CSS syntax.

(4.8) 454 reviews

19,918 learners

  • soaple
React
HTML/CSS
JavaScript

Reviews from Early Learners

What you will learn!

  • JavaScript Basic Syntax

  • Basic CSS Syntax

  • Solidifying the Fundamentals of React

  • Web application development through mini-projects

🚨 Notice of suspension of lecture provision 🚨

Hello, this is Sopl.
Over 20,000 people have loved it so far
Inflearn's offering of the course ' First Encounter with React ' has been discontinued.
From now on, you can take the course through the link below 😀

With neat lecture materials and detailed explanations
This is an easy-to-learn React course. 👨‍🏫

Into the world of React
You are invited 💫

React is an open source JavaScript UI library created by Meta.
It is currently the most widely used in web application development.
It has many advantages, such as fast updates, rendering speed, and component-based structure.


Features of the lecture

Let me tell you 🔎

  • Learn basic JavaScript grammar.
  • Learn CSS concepts and frequently used properties.
  • Build a foundation of React concepts and learn how to use it.
  • Develop real-world React applications through mini-projects.
  • For beginners, it includes basics of HTML, CSS, and JS.


The lecture is also available as a book
You can meet me! 📖

So that you can also view the lectures in book form
The lecture content is included in its entirety in the book.
Reading the book along with the video lectures
Dive into the world of React!

🌟 Famous lecture 🌟

Sopl's First Encounter with React [2nd Edition]
- From basic React concepts to practical training


Even after the lecture is over
Questions & Answers Provided 💬

We will answer any questions you may have while developing with React even after taking all the lectures.
Feel free to ask questions at any time on FrontOverflow, the front-end knowledge portal created by knowledge sharer Sopl!

🔗 Visit FrontOverflow


Changes in students after attending the lecture 🙋‍♂️

About JS basic grammar
I can understand!

Frequently used CSS
I can understand!

The basics of React
You can chop it well!

Experience in real-world projects
You can stack them.


A sneak peek of what you'll learn 📚

Section 0 [Getting Ready]

  • Learn about HTML, CSS concepts and basic JavaScript grammar, and set up an environment for practice.

Section 1, 2 [Introduction to React, Getting Started]

  • Learn about React, its pros and cons.
  • Learn how to integrate React directly and about create-react-app.

Section 3 [JSX]

  • Learn about what JSX is, what it does, and how to use it.

Section 4 [Rendering Elements]

  • Learn about the definition, features, and rendering methods of React elements.

Section 5 [Components and Props]

  • Learn about the definition and usage of React components and Props.

Section 6 [State and Lifecycle]

  • Learn about the concept of State and the component Lifecycle.

Section 7 [Hooks]

  • Learn about the concept of React hooks, representative hooks, and custom hooks.

Section 8 [Handling Events]

  • Learn how to handle events in React.

Section 9 [Conditional Rendering]

  • Learn about the concept of conditional rendering and how to implement it.

Section 10 [Lists and Keys]

  • Learn about the concept of lists and keys, and how to actually render them.

Section 11 [Forms]

  • Learn about various Forms and control components.

Section 12 [Lifting State Up]

  • Learn about Shared State and how to share state between components.

Section 13 [Composition vs Inheritance]

  • Learn about different ways to compose components and the implications of inheritance.

Section 14 [Context]

  • Learn about the concept of Context and the Context API.

Section 15 [Styling]

  • Learn about representative CSS properties and styled-components.

Section 16 [Mini Project]

  • Let's create a mini blog by summarizing what we've learned so far.

Expected Questions Q&A 💬

Q. Is this a lecture that I can take even if I don't know much about JavaScript ?

Yes! Even if you don't know much about JavaScript, you can still listen to the lecture because it explains the basic grammar.

Q. Is this a lecture that I can take even if I don't know much about CSS?

Yes, you can take the course even if you don't know much about it, because it covers the representative properties of CSS.

Q. What are the benefits of learning React?

React lets me develop web applications the way I want.


Learning Materials 💡

Lessons 3 - 15. Practice source code

React v17 source code
https://github.com/soaple/first-met-react-practice

React v18 source code
https://github.com/soaple/first-met-react-practice-v18

Round of 16. Mini blog source code

https://github.com/soaple/mini-blog

Recommended for
these people

Who is this course right for?

  • Anyone interested in web application development

  • For those who are new to React

Hello
This is

안녕하세요, 소플입니다.

2025년 3월부로 인프런에서의 지식공유자 활동을 마무리하고 새로운 출발을 합니다.

앞으로는 아래 사이트에서 제 강의와 컨텐츠들을 만나보실 수 있습니다.

소플이 만든 프론트엔드 지식 포털 - FrontOverflow

Curriculum

All

0 lectures

Published: 
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Reviews

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454 reviews

4.8

454 reviews

  • chayuna917584님의 프로필 이미지
    chayuna917584

    Reviews 1

    Average Rating 5.0

    5

    100% enrolled

    In the f-mode lecture, I was listening to a lecture that read the official documentation, but it was too long, I didn't understand it, and it was too difficult, so I gave up and looked through the React lectures, and I found a gem of a lecture. This is free... This is free...! I was amazed at the teaching ability that it was so easy and friendly to approach. The component bungeoppang is so cute. Jjangjangman He doesn't look away and just gets to the core. Thank you for saving me time. This lecture is a living practice version of the official documentation. Even at double speed, the pronunciation is so accurate that it doesn't get muffled and is easy to hear.

    • soaple
      Instructor

      Thank you chayuna91 for leaving a review. I tried to explain it as easily as possible, and I am happy and grateful that you understood it. I tried to remove as much difficult content as possible and focused only on building a solid foundation of React, so if you listen to the lecture diligently, you will be able to get closer to React! Thank you for liking the bungeoppang picture that I drew one by one~ I hope you have fun learning!

  • yuri04152449님의 프로필 이미지
    yuri04152449

    Reviews 1

    Average Rating 5.0

    5

    100% enrolled

    I happened to hear about this lecture, but it was so good! I think it would be great for people who are new to React and have a basic understanding of HTML, CSS, and JavaScript to take this course. There are many advantages, but the best ones are 1) clean and concise explanations, 2) practice-based review of course content, and 3) teaching skills! I've tried to take many courses... but this is the first time I've seen a lecture this thorough! I think it would be good to have React, which I've been exposed to for a long time...ㅎㅎ Thank you so much for the great lecture, and I'll definitely take any new courses you open in the future! I highly recommend it to anyone who hasn't taken it yet.

    • soaple
      Instructor

      Thank you yrrrrrrrr for leaving a review. I'm so happy that my lecture was a good fit for you~ I don't know when it will be, but please look forward to the next lectureㅎㅎ I hope you continue to have fun developing React!

  • rjh71000066님의 프로필 이미지
    rjh71000066

    Reviews 1

    Average Rating 5.0

    5

    50% enrolled

    I am currently a student who has completed about 20% of the course! When I did a web project with React in the past, I studied on my own as if I was heading to the bare ground. It was too difficult, and there were many things I didn't understand. Then, when I joined a company, I was going to be in charge of the web, so I studied again and came across the lecture. The lecturer's ability is so great that I even said, "This is a free lecture..?" I don't know why I only saw it now, it's such a good lecture!

    • soaple
      Instructor

      Thank you, Gibbonmonkey, for leaving a review. I'm so happy that you were able to understand React, which you had found difficult, a little more easily through my lecture. I hope you will complete the remaining lectures, and if you have any questions while taking the class, please leave a question at any time!

  • hek33kr4899님의 프로필 이미지
    hek33kr4899

    Reviews 1

    Average Rating 5.0

    5

    100% enrolled

    I am a developer working in the field with Swift. I started studying from scratch without knowing anything, and now I am studying React. I don't know much about JS and I don't know much about the web, so I thought it would be good to learn from the basics, so I took the course. It is well organized with the necessary content, and it is interesting to see the code that is different from my coding style. I listened to the course well. Thank you!

    • soaple
      Instructor

      Thank you, hek33kr, for leaving a review. I'm glad that my lecture was helpful to you~ I hope you continue to have fun developing React!

  • yongwchoi261087님의 프로필 이미지
    yongwchoi261087

    Reviews 17

    Average Rating 4.8

    5

    31% enrolled

    Q&A Communication is not smooth.

    • soaple
      Instructor

      Thank you for leaving a review, Yong-won Choi. I haven't left any unanswered questions, but if you could provide the link to the question, I'll check it out and answer it!

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