React apps frequently make use of the next.js application framework. Users rely on next.js to provide state management features like data synchronization between the server and the front end.

The next-state object method in Next.js controls the state of the program. It considers an item as its sole parameter. The updated values are written to the state object’s altered property, and a new object is returned with the same characteristics as the original. Any modifications made to the properties of the initial object will be reflected in the new object that is created by the following state.

With this method, it’s simple to keep the app’s state current at all times. It is important to note a few exceptions, though. The first issue is that between page reloads, Next.js application development does not preserve state modifications. The second form is a single-threaded one. Until the next state has completed processing the changes, adjustments made in one area of the app won’t automatically propagate to other areas.

What is State Management in Next.js?

The capacity of a Next.js application to store and access data in an easily accessible way is referred to as state management in Next.js. The state, which is what Next.js refers to as a collection of data used to track the status of an application action or cycle, can be used to accomplish this. The state’s intricacy can change depending on the situation.

When using states, Next.js apps can typically be divided into global and component states. An application’s global state contains data that is shared by all of its components, whereas the component state contains data that is unique to each component. Within Next.js apps, the state may also be saved as variables, arrays, or objects.

Also read, What’s New in Next.js 13? All you need to Know!

Consider a straightforward input area that needs user input to be saved as a state:

The input variable in this code snippet stores the world state, and the event listener connected to the input element provides access to the component state. This will save the value entered into myInput whenever the input field gets input from the user and launch the event handler mentioned above.

Managing states in next.js becomes more crucial as apps use more advanced features and demand larger amounts of data storage. Large state stores can be handled using a variety of techniques, including using modules to group states together and make them simpler to access or a state management library like Redux.

Next’s state management.Js can hold any type of data in an application because it is made to be straightforward and simple to use.

Installation of a State Manager in Next.js

By acting as a central location for all of an application’s worldwide data, a state manager is a particular kind of library that facilitates state management. Information about an account, a session, and the program itself (such as its menu items and components) are a few instances.

Despite the fact that there are numerous state managers accessible, we’ll use the Redux state manager. We simply need to add this library to the following to complete the installation procedure.Js executes the following:

The state manager in MyComponent can now be used. We must first make an instance of the StateManager class to accomplish this:

We can now reach the store that was created in the previous step by using the store property of the StateManager class:

Finally, we can use the getDefaultState() method of the StateManager class to get the state that will be used by MyComponent when it is initialized (), as follows:

Now we can use this state to initialize our MyComponent:

Learn How to Use The Impure Lib Variable

Libraries, also known as libs, make it simple to include requirements from outside sources in a program. In libs, we can choose which libraries should be installed along with the program.

To create a lib, first install the next-lib package:

Next, in the project’s root folder, make a new file named lib.js and paste the code below into it.

Now we can require this Lib in theNext.js app by adding the following line to theapp.js file:

In the example, we can now use Lib just like any other dependency. Lib, for instance, can be used to import external dependencies that are not part of Next.js.

Built-in Functions for States & Components

State management is taken care of by our built-in methods in Next.js. We can use these functions to perform tasks like switching out one component for another and keeping track of which components are visible and hidden.

All components, including the unique ones we develop, are compatible with our state control features.

The state management functions of Next.js are internal and not exposed as public APIs. They are not permitted in exports or component parts.

Advanced Settings

We can rapidly and effectively manage the application state with Next.js. You can accomplish this in one of three ways: using the Next.js state object, mutations, or the observer design.

The state of a program is primarily managed by the state object in Next.js. It offers a centralized location for storing the application’s data as well as a number of APIs that enable quick entry and modification.

Another method to control the state of the application is through mutations. They enable altering the behavior of the application depending on the fulfillment of certain requirements.

Another technique to manage the state of the program is the observer pattern. It enables us to handle changes to the environment in a particular area of the application without having to think about the application as a whole.

What Does a State Mean in a Next.js Environment?

A strong state management library for creating program states is called Next.js. A state in Next.js is an object that is the owner of a set of key-value combinations. The different state-manipulating functions include:


creates a new number for the value of the key specified. Next.js When a key doesn’t exist, js will create one and give an empty string to it.


Get returns the state storage value linked to the given key. Next.js returns null if the key is invalid.


Adds a new item to the end of the state store’s list of entries for a specific key. Next.js creates the key and changes its value to an empty string if it doesn’t already exist.


Removes a specified key’s first instance from the state store. Next.js creates the key and changes its value to an empty string if it doesn’t already exist.


Removes every entry for a specific critical route from the state store.

State management in Next.js applications

States in Following Next.Js are controlled by specifying the state of the component and dealing with variables that alter the state of the component. There are a few techniques that can be used for this:

  1. using a component instance’s state() function.
  2. method on a copy of a component. defining a computed property connected to the status of a component.
  3. making an event manager to deal with state changes for the component.

Code Overview

A modular JavaScript system called Next.js makes state management simple. It offers a number of built-in options for handling states, including the global state and objects with arbitrary nesting. The Next.js API can also be used to build our state management system.

Here, we’ll use the global state and the setTimeout method in Next.js to build a straightforward countdown timer. The script from Next.js, on which the code is built, is as follows:

A countdown element and a countdown element are both created by the code. The countdown element has a display property that controls whether it is shown as a block or a grid item. Contrarily, the timer element has a textContent attribute that specifies its information. In order to see the outcome, we show both elements once more after using the setTimeout function to start a countdown interval of 1000 milliseconds.


With the help of the potent tool Next.js, we can create web apps with little code and without sacrificing the speed or quality of the application. States in Next.js apps enable the use of ES6 and JavaScript syntax without triggering any events. (TypeScript Compiler). It is one of Next.js’s finest features and a straightforward method for creating React applications. It gives developers a fantastic tool to completely personalize their web apps.

Hire Next.js developers from Nettyfy Technologies rather than separate firms, and create full-stack web apps with the best features and capabilities. At Nettyfy Technologies, we provide professional NextJS development services and specialised ReactJS development services while adhering to finest best practicess. You will have the greatest partners for your project if you choose us, and we’ll make sure to use the best elements of both frameworks to make your web app come to life.

Contact us right away, and let’s work together to create a successful app.