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javascript - How to check the token in localStorage is valid or not?

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Solution:

You need to do following code for securing pages

Add token in redux or localstorage
On refresh, call api and send token to server that will validate your token
If validated then you can show protected page otherwise redirect to login
On server side make middleware that will check if request has token and its valid
If not valid, send unauthorized response that you can intercept with axios if you are using axios. Or create middleware for response in reactjs

I think this can solve your problem of authenticating user

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2023-08-1

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JavaScript

JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
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React

React is currently the leader in JavaScript UI frameworks. First, the Facebook developers started working on this to make their job easier. An app called Facebook Ads grew very quickly, which meant complex management and support. As a result, the team began to create a structure that would help them with efficiency. They had an early prototype before 2011, and two years later, the framework was open source and available to the public. It is currently used by many business giants: AirBNB, PayPal, Netflix, etc.
https://reactjs.org/

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