Javascript 如何将变量导出到异步存储?
我想将我的Javascript 如何将变量导出到异步存储?,javascript,reactjs,asyncstorage,Javascript,Reactjs,Asyncstorage,我想将我的user\u id变量从authActions.js导出到auth.js的user\u KEY const,这可能吗 这是我的authActions.js函数,其中生成user\u id export function loginUser(email, password) { return function (dispatch) { return axios.post(SIGNIN_URL, { email, password }).then((response) =>
user\u id
变量从authActions.js导出到auth.js的user\u KEY const,这可能吗
这是我的authActions.js
函数,其中生成user\u id
export function loginUser(email, password) {
return function (dispatch) {
return axios.post(SIGNIN_URL, { email, password }).then((response) => {
var { user_id, token } = response.data;
console.log('my user_id = ' + user_id);
console.log('my token = ' + token);
dispatch(authUser(user_id));
isSignedIn();
}).catch((error) => {
console.log(error);
dispatch(addAlert("Could not log in."));
});
};
}
这是我的auth.js
,其中有const USER\u键
import { AsyncStorage } from "react-native";
export const USER_KEY = "auth-key";
console.log('USER_KEY ' + USER_KEY);
export const onSignIn = () => AsyncStorage.setItem(USER_KEY, "true");
export const onSignOut = () => AsyncStorage.removeItem(USER_KEY);
export const isSignedIn = () => {
return new Promise((resolve, reject) => {
AsyncStorage.getItem(USER_KEY)
.then(res => {
if (res !== null) {
resolve(true);
} else {
resolve(false);
}
})
.catch(err => reject(err));
});
};
更改:
export const onSignIn = () => AsyncStorage.setItem(USER_KEY, "true");
致:
然后在帖子的.then()
中,您可以执行以下操作:
onSignIn(user_id);
但随后立即检查
isSignedIn()
可能不会像预期的那样工作,因为AsyncStorage
是异步的。如果他们刚刚获得了用户id
和令牌
,是否需要立即检查?这是正确的。正在工作,但要看到效果,我必须刷新应用程序。你知道如何立即检查吗?
onSignIn(user_id);