Avoiding Race Conditions and Memory Leaks in React UseEffect

Avoiding Race Conditions and Memory Leaks in React UseEffect

In this tutorial, we will learn how to avoid race conditions and memory leaks in React Useffect. Learn how to deal with the “Can’t perform a React state update on an unmounted component” warning

Let us take a look at an implementation of getting data from an API request and see if there is any possibility of race conditions happening in this component:

import React, { useEffect} from 'react';
export default function UseEffectWithRaceCondition() {
  const [todo, setTodo] = useState(null);
  useEffect(() => {
    const fetchData = async () => {
      const response = await fetch('https://jsonplaceholder.typicode.com/todos/1');
      const newData = await response.json();
      setTodo(newData);
    };
    fetchData();
  }, []);
  if (data) {
    return <div>{data.title}</div>;
  } else {
    return null;
  }
}

We have specified an empty array as a dependency to the useEffect React hook. So we have ensured that the fetch request happens only once. But this component is still prone to race conditions and memory leaks. How?

javascript

What is Geek Coin

What is GeekCash, Geek Token

Best Visual Studio Code Themes of 2021

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

Hire dedicated JavaScript Developers who are proficient in AngularJS, ReactJS, NodeJS, & VueJS frameworks. Get flexible hiring models as per your business requirements.

What is JavaScript - Stackfindover - Blog

What is PHP: - Who invented PHP, how it works, answers to all such questions about PHP, and much other information, you are going to

JavaScript Shopping Cart - Javascript Project for Beginners

JavaScript Shopping Cart - javascript shopping cart tutorial for beginnersBuy me a coffee 🍺 https://www.paypal.com/paypalme/ziddahSource Code: https://bit....

The essential JavaScript concepts that you should understand

The essential JavaScript concepts that you should understand - For successful developing and to pass a work interview

Learn JavaScript - Full Course for Beginners. DO NOT MISS!!!

In this video tutorial, we'll learn Learn JavaScript - Full Course for Beginners. This complete 134-part JavaScript tutorial for beginners will teach you everything you need to know to get started with the JavaScript programming language. DO NOT MISS!!!