有没有办法从React组件导出变量以在我的自定义钩子中使用它?
代码如下:-
function App()
{
const SignIn=()=>{
//Some code here
var userId = data.info.username;
//Some code here
}
return(
<div className='App'>
....
</div>
)
}
我需要在其他文件中使用userId。反正有做吗?
答案 0 :(得分:0)
localStorage.setItem('userId',data.info.username);
并获取数据
const userId = localStorage.getItem("userId");
还了解有关redux和redux-persist
的信息
https://www.npmjs.com/package/redux
答案 1 :(得分:0)
您可以使用createcontext()-React.createContext()
userDetails.js
import React from "react";
const UserDetails = React.createContext({ user: null });
export default UserDetails ;
在App.js中
import UserDetails from "./userDetails"
function App()
{
const SignIn=()=>{
//Some code here
var userId = data.info.username;
//Some code here
}
return(
<UserDetails.provider value={{user:userId}}>
<div className='App'>
....
</div>
</UserDetails.provider>
)
}
在孩子或需要的部分
import { useContext } from "react";
import UserDetails from "./userDetails"
const userIdFetch = useContext(UserDetails);
console.log(userIdFetch.user) //u will get user id