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오늘은 앞서 배운 React 핵심 개념들을 활용해서 실제 Todo 앱을 만들어보겠습니다!1. 프로젝트 구조 설계 📂src/├── components/│ ├── TodoInput.js│ ├── TodoList.js│ ├── TodoItem.js│ └── TodoFilters.js├── hooks/│ └── useTodos.js├── contexts/│ └── TodoContext.js└── App.js2. 상태 관리 설계 (Context API) 🗃️// TodoContext.jsconst TodoContext = createContext();export function TodoProvider({ children }) { const [todos, setTodos] = useSta..

오늘은 React 개발자가 꼭 알아야 할 핵심 개념들을 알아보겠습니다.1. Component가 뭔가요? 🧩레고 블록을 생각해보세요!레고처럼 작은 부품들을 조립해서 큰 작품을 만드는 것UI를 재사용 가능한 조각으로 나누는 것이 바로 Component예요// 함수형 컴포넌트 예시function Button({ text, onClick }) { return ( {text} );}// 사용 예시 alert('안녕!')} />2. Props와 State 🎭Props (Properties)마치 택배 배송처럼 작동합니다!부모가 자식에게 전달하는 데이터읽기 전용 (수정 불가)컴포넌트의 "설정값"// 부모 컴포넌트function Parent() { return ;}// 자식 컴포넌트fun..

IntroductionReact hooks revolutionized the way developers write React components. Introduced in React 16.8, hooks allow functional components to use state and other React features without writing a class. This guide will walk you through the core concepts of React hooks, provide detailed examples, and offer practical insights for their effective use.The Big PictureImagine you're constructing a b..

The virtual DOM improves performance by minimizing direct updates to the real DOM, making updates more efficient and reducing the computational load on the browser.The Big PictureImagine you are organizing a large stack of papers. If you had to update each piece of paper individually, it would be time-consuming and tedious. Instead, you create a checklist of changes to make and then apply all ch..

In this response, I'll guide you through creating a simple React component that displays a message passed as a prop, breaking down each step with an analogy to make the process clear and understandable.The Big PictureImagine you're building a small sign that can display different messages. The message on the sign can be changed by providing a new message. In React, we create components to build ..

The React component lifecycle consists of a series of methods that are invoked at different stages of a component's existence, allowing you to control its behavior from creation to destruction.The Big PictureImagine you’re organizing a stage play. The lifecycle of the play involves various stages: setup (mounting), running the play (updating), and teardown (unmounting). Each stage has specific t..

React components are special JavaScript functions or classes that return JSX to define the structure and behavior of a user interface, whereas regular JavaScript functions do not inherently have this UI-focused capability.The Big PictureThink of a React component as a self-contained, reusable building block for a web application, much like a LEGO piece that can be used to build complex structure..

JSX is a syntax extension for JavaScript that looks similar to XML or HTML and is used in React to describe the UI structure in a declarative way.The Big PictureImagine you are describing the layout of a house. Traditional JavaScript lets you describe each element individually, like writing a list of instructions for a builder. JSX, on the other hand, allows you to draw a blueprint where you can..

React is a JavaScript library for building user interfaces, especially for single-page applications where data changes over time.The Big PictureImagine building a complex structure with Lego blocks. Each block can be customized, and you can piece them together to form various structures. In the world of web development, React allows you to create user interfaces in a similar modular way, where e..

Traversing 이란 "move through" 또는 이동하다 즉 HTML element(태그)를 찾는다.  : HTML은 DOM tree 구조여서 다른 element와의 관계 속에서 태그를 찾아야 한다.  1 div : ul의 parent, 하위 모든 태그 ancestor2 ul : 좌측, 우측 li 태그의 parent 및 div 태그 child3 좌측 li : span 태그 parent, ul 태그 child, div 태그 descendant4 span 태그는 li 태그 child, ul 및 div 태그 descendant5 li 태그는 서로 sibling (동일한 부모 보유)6 b 태그는 우측 li 태그 child, ul 및 div 태그 descendant parent()정의: 선택한 eleme..