1 创建action
2 创建reducer ,在reducer中绑定action
3 在app 中写绑定reducer中的代码
const store = createStore(rootReducer)
</Provider>
4 创建组件
Books
5把这个几个方法写好
// reducers中的数据 ,然后更新组件
const mapStateToProps = (state) => ({
books: state.bookReducer.books
})
// 给action传值 ,触发action
const mapDispatchToProps = {
dispatchAddBook: (book) => addBook(book)
}
export default connect(mapStateToProps, mapDispatchToProps)(Books)