ENHANCING THE REACT APPLICATION USING A CUSTOM HOOKS

What Are Custom Hooks?

To begin with, it can be reiterated that the React.js domain endorses reusability. In most cases, programmers design and use pourable components and functions for API access — these are good approaches. However, custom hooks are an evolution of this concept. In situations where multiple components are to undertake some activities, custom hooks enable the extraction and centralization of application logic, giving room for cleaner and more maintainable code structure.

How Custom Hooks Work?

Custom hooks are more or less simple functions well written using JavaScript, but they must begin with the word ‘use’ (for instance, useSearch). They are intended to enable Developers to extract logic from the components and encapsulate it in individual reusable functions. This allows us to give stateful logic to various components and not have to depend on class components or render props. Custom hooks help keep our codes cleaner and provide the ability to use the same features whenever they are needed in the whole application.
 

Crafting Custom Hooks?

let's see how we can use our custom hook in a component.

In above image we can see that we have created custom hooks with the name of useSearch (“This is the best practice of using ‘use’ at the beginning of any custom hook).

Use:- This custom hook is used to handle search and get data in a component. As we can see that we have taken multiple values in props like initialUrl, initial Params, method, and firstload.

Using Custom Hooks?
 

In our component, we utilize a custom hook called useSearch where we provide inputs such as URL, parameters, and HTTP methods to the hook. These inputs are then incorporated in the useSearch to perform API calls, which helps to focus the duplication of this feature within a single capability usable across more than one component..

Depending on the needs of the user, our custom hook can provide several values:

1. Data:  The primary payload's data present and utilized in the application.
2. setParams: Functional values that set new values to the params (like pagination or search filters) initiating a new call to the API with those parameters.
3. setUrl: Makes it possible to change the API's URL on the go
4. Params: Current parameters that are set for making the API call.
5. metadata: Extra details from payload like pagination data.
6. Loading: A flag that can either be true or false indicating if the API is currently being called (true)    or has been called and completed (false).

What are the Benefits of Custom Hooks?

1.   Duplicating Work is Discouraged: This gives a way to implement logic in more than one component for the same purpose without the risk of repetition.

2. Elegant Code That Is Easier To Modify:   Facilitates modularization and therefore makes the components easier to understand as well as maintain.

3. Development of New Levels of Functionality: Allows placing any complex logic behind a wall that exposes only the functions and variables necessary for access by the given component.

4.  Open to Modification:  This allows for making adjustments in the parameters in different situations without altering the basic structure of the logic of the components.

5.  Easier Testing:  Because of the separation between the UI rendering and the logic implementing the component, the code is able to stand in tests.

6 Performance Improvement: Manages state effectively and prevents unneeded rendering, thereby 
  

To Summarise: 

As stated previously, custom hooks are a better way of implementing reusable stateful logic into React.js Development. They prevent the overlapping of component readabilities and optimise the ordering of the code in line with the applications resulting in less coupled and more scalable systems.