Skip to main content

React Hooks: useEffect() is called twice Next.js

React Hooks: useEffect() is called twice Next.js and React

In this blog post, we will explore how to fix problem with useeffect() hook called twice during the Page load in next.js.

Code

"use client"
import { useEffect, useState } from "react";

export default function Home() {

  const [products, setProducts]=useState([]);
  useEffect(() => {
    fetch("https://dummyjson.com/products")
    .then(response => response.json())
         .then(data => setProducts(data.products))
  },[])
  return (
   
); }

Refresh the page and check network tab. Fetch/XHR

Solution

  • Go to next.config.mjs and add reactStrictMode: false

Refresh the page and check network tab. Fetch/XHR

Conclusion

In this blog post, we learned how to fix the useEffect() hook calling twice during page load in Next.js application.

Comment on this Post if you have any questions.

Made with VideoToBlog

Comments

Popular posts from this blog

Ultimate Guide to Implementing DELETE Operations in Next.js with Prisma

In this tutorial, we will learn how to delete a post in Next.js using the API and UI code. Deleting a post requires making changes to the folder structure and implementing the delete method. Let's dive in! Changing the Folder Structure Currently, the folder structure for the API is not suitable for deleting posts. We need to pass an ID to delete a specific post. To enable this functionality, we will need to alter the folder structure. Here's how: Create a new folder named "posts" within the API directory. Move the existing file into the "posts" folder. Rename the file to "index". Now, when we access the "posts" endpoint, it will work without specifying the file name. Implementing the Delete Method To delete a post, we need to create a new file in the "posts" folder and pass the I...

Creating API Routes for a Full Stack Application

In this blog post, we will explore how to create API routes for a full stack application. API routes are essential for connecting the frontend components to the backend database and fetching data. We will specifically focus on creating the API routes and endpoints for making API calls and retrieving data. Setting up the Database Before we dive into creating the API routes, we need to set up the database. In this example, we will be using a local PostgreSQL database. To connect to the database, we have a schema file that defines a table called "todos" with four fields: id, name, username, and created_at. Currently, we have two records in the todos table. The next step is to write the API routes to connect to the database and fetch the data. Using Prisma for API Routing To create the API routes, we will be using the Prisma library, specifically the Prisma client. The Prisma client allows us to connect to the database and execute queries. To start with the API rout...

How to use Redux in Next.js

Introduction In this blog post, we will explore how to use Redux with Next.js and create todo and disptach it to Redux store and and pass the todo (state) to a Page and display the created Todo. We will cover the process of setting up the necessary Redux store and cover the end to end flow. Create Next.js application npx create-next-app@latest Install dependencies npm install --save @reduxjs/toolkit npm install --save react-redux npm install --save redux-persist Folders and files needed Create folder lib under src folder(src/lib) Create Interface Todos under lib folder (lib/Todos.ts) export interface ITodo { todosState: [Todo] } export interface Todo { todoName: string, description: string, userName: string, id: string } Create folder store under lib (lib/store) Create fi...