Auto-Refresh and Cleanup Functions in React TypeScript: Keeping Your Web Application Efficient and Up-to-Date

Photo by Rui Alves on Unsplash

Auto-refresh in a React TypeScript Application

Auto-refresh is a useful feature in web applications that allows the application to fetch new data from the server automatically without the user needing to refresh the page manually. In a React TypeScript application, you can implement auto-refresh using the useEffect hook and the setInterval method.

To implement auto-refresh, you can use the useEffect hook to make an API call to fetch data from the backend API and then use the setInterval method to delay the next call to the API by a certain amount of time. When the component unmounts or when the dependencies of the hook change, you can use the returned function to clear any resources that were set up in the effect.

Here’s an example code snippet that demonstrates how to implement auto-refresh in a React TypeScript application:

import React, { useState, useEffect } from 'react';

interface Data {
  // Define the type of data you expect to receive from the API
  // Example:
  id: number;
  name: string;
  // ...
}

const App: React.FC = () => {
  const [data, setData] = useState<Data | null>(null);

  useEffect(() => {
    const fetchData = async () => {…