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修復新 webpack 版本的 webpack 錯誤

npm run build引發錯誤：error: unknown option '-p'
解法:
package.json內的webpack -p
更改為 --mode production

修復新 npm run start 無法執行

解法:
devServer: {
// contentBase: './dist',
static: './dist',
},

inline style

1. 用駝峰式取得 CSS 樣式名稱，且不能有 - 號
若要使用 CSS 的短橫線，可將所有的 key 都變成字串
2. Component 的字首須為大寫字母

生命週期

1. Component Render 完畢。
2. Component 內的 State 改變。
3. Component 被移除時。

Prop-Types

1. 父層 Component 將某些資料或事件交給子層 Component
2. prop type 錯誤時，是否傳入不正確的 Props 型別

Redux 資料管理

1. 資料放到 Store 中儲存，並以 useSelector 將資料取出
2. 將資料層抽離在Redux 中， Component只需向 Redux 取資料，然後負責畫面的呈現

Redux 事件處理

1. Reducer會根據 action.type 來判斷要做什麼事情
2. Redux 流程為先對 Component 做 connect，之後便可使用 Store 的 dispatch 觸發預先在 Reducer 中寫好的邏輯

設置 Middleware

1. Redux 中用上了不只一個 Middleware，redux-logger一定要設置在最後一個
2. Middleware 會在 Store 和 Reducer 之間，所有透過 Dispatch 的執行都會經過 Middleware

設置 Redux Saga (請求 API)

Redux-Saga 的流程同樣是先對 Component 做 connect，
但 dispatch 觸發的事件為 React-Saga 預先訂閱的名稱，
在該事件裡才依照流程去觸發需執行的 Reducer 邏輯

SPA(單頁應用程式)

針對 Url 的變化，來決定顯示哪個 Component 作為當前頁面

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