即使重新加载页面,我也想保存状态更改。我已经在 console.log 中检查了我的 oldState 常量,它可以工作。但是我的用户界面没有显示本地存储的状态。如何在 preloadedState 中使用我的 oldState 常量?
const saveState = state => {
try {
const serialisedState = JSON.stringify(state)
window.localStorage.setItem('appState', serialisedState)
} catch (err) {
// error message
}
}
const loadState = () => {
try {
const serialisedState = window.localStorage.getItem('appState')
console.log(serialisedState)
if (!serialisedState) return undefined
} catch (err) {
// error message
return undefined
}
}
const oldState = loadState()
export const store = configureStore({
reducer: {
products,
filters,
product,
cart,
},
preloadedState: oldState,
})
store.subscribe(() => {
saveState(store.getState())
})