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context-q

v1.1.8

Published

Simple Context API Wrapper for React

Downloads

122

Readme

Context Q

소개

Context API를 간단히 사용할 수 있도록 도와주는 라이브러리입니다.

설치

npm i context-q
# 혹은
yarn add context-q

사용

DOM Root에 Provider 설정

Context 사용에 있어 가장 중요한 것은 Provider의 설정입니다.
보통 App.js 혹은 index.js 에 위치한 DOM Tree의 최상위에 Provider를 위치시킵니다.

Provider에는 defaultState가 있습니다.
Provider 내에서 공유될 상태 state 가 선언됩니다. State 와 동일하게 Object 형식으로 자유롭게 설정할 수 있습니다.

// App.js
import { Provider } from 'context-q';

function App() {
  return (
    <Provider defaultState={{ value: 'here' }}>
      <App />
    </Provider>
  );
}

공유된 상태는 hook 또는 hoc 형태로 사용할 수 있습니다.

Hook 방식

// View.js
import { useContextQ } from 'context-q';

function View() {
  const context = useContextQ();
  return <div>value : {context.value}</div>;
}

Hoc 방식

// View.js
import { withContext } from 'context-q';

function View(props) {
  return <div>value : {props.context.value}</div>;
}

export default withContext(View);

컨텍스트 업데이트

Context Qupdate라는 함수를 가지고 있습니다.
이를 통해 상태를 업데이트 시킬 수 있습니다.

function View() {
  const context = useContext(Context);
  return (
    <div>
      <p>Value : {context.value}</p>
      <button onClick={ () => context.update( { value: 'updated' } ) }>
        업데이트
      </button>
    </div>
  )
}

데모