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Context_Hook

React.creatContext as store, store.Provider, store.Consumer

React 的 context 是一個全域變數,能儲存全域的值提供所有解析函式 Resolver 讀取資料的地方。 context 適用於情境如下:

  • Auth, 身份驗證

  • DB env, 資料庫細節

  • Cache, 本地快取

  • Resolver 需要解析函數操作的資料 詳見 Apollo Data Source。

宣告方式

React.createContext({})

使用方式

React.createContext({}).Provider
React.createContext({}).Consumer

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React.creatContext as store, store.Provider, store.Consumer

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