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The Power of UUID: Improving App-building Efficiency and User Experience

Introduction to UUID

In the world of app-building, it is essential to have unique identification for similar components. It enables smooth flow of data and better communication between different components.

That is what Universal Unique Identifier (UUID) brings to the table. The concept of UUID has changed the face of app-building in recent years.

UUIDs are used to generate unique identification with maximum randomness, which can help multiple components in an app to communicate with minimal interference. UUIDs are crucial for e-commerce websites, shoe-selling apps, and other areas where uniqueness is needed.

In this article, we will dive into the importance of UUIDs and learn how to use them to create simple ID generating apps using NPM UUID in ReactJS.

Creating a Simple ID Generating App Using NPM UUID in ReactJS

Installing and Importing UUID Dependency

The NPM UUID module is used to generate unique identification for different components in your app. You can install the NPM UUID module by running ‘npm install uuid’ or ‘npx uuid’ on your terminal.

After installing the dependency, import it into your React application by adding the following line of code to your app.js file –


import { v4 as uuidv4 } from ‘uuid’;


Generating and Displaying UUID Codes

You can generate a UUID code in your React app by calling the ‘uuidv4()’ function. This function generates a unique, random UUID code each time the function is run.

You can display the UUID code on your page by adding a state to your functional component and setting its value every time the ‘uuidv4()’ function is called. Below is a sample code snippet you can use to generate and display UUID codes in your React app.


import { useState } from ‘react’;

import { v4 as uuidv4 } from ‘uuid’;

function App() {

const [uuidCode, setUuidCode] = useState(“”);

function generateUUID() {



return (

Generate Unique IDs using UUID

UUID Code: {uuidCode}




In the code snippet above, we use the useState hook to declare a state called ‘uuidCode’. The initial value of the state is set to an empty string.

We then define a ‘generateUUID()’ function that assigns the result of the ‘uuidv4()’ function to the ‘uuidCode’ state by calling its ‘setUuidCode()’ method. We then add an event listener to the ‘Generate UUID’ button.

When the button is clicked, it calls the ‘generateUUID()’ function, which generates a new UUID code and updates the value of the ‘uuidCode’ state. Finally, we display the UUID code on the page with the help of the ‘uuidCode’ state.


In conclusion, UUIDs are essential for app-building, especially in areas where uniqueness is critical. They help establish a smooth flow of data and better communication between different components of an app.

We have learned how to use the NPM UUID module to generate unique identification in ReactJS apps. Using the code example above, you can now generate unique IDs and use them for your app development, whether it is an e-commerce website or a shoe-selling app.

UUIDs provide a unique value which improves user experience, data handling, and app functionality.

Creating a To-Do List App Using NPM UUID in ReactJS

To-do list applications have become a staple for users to stay productive, organized and focused. In this section, we will see how NPM UUID, along with other dependencies, can be used to create a simple and efficient to-do list app.

Dependencies Needed for Creating the App

For this app, we will require a few third-party dependencies. React-Bootstrap provides a wide range of ready-to-use bootstrap components that we can use to style our app.

Additionally, we require the react-transition-group dependency to add some animation while adding or removing to-do list items. Follow the code below to install React-Bootstrap and React-Transition-Group in your application.


npm install react-bootstrap

npm install react-transition-group


Implementing UUID to Generate IDs for List Items

We will use the UUID feature to generate unique IDs for each task added to our to-do list. We achieve this by creating a new state for the tasks array using the useState hook and keeping track of each task’s ID, whether its added or deleted.

Follow the code below to implement UUID for generating unique IDs.


import { useState } from “react”;

import { v4 as uuidv4 } from “uuid”;

import { ListGroup } from “react-bootstrap”;

import { CSSTransition, TransitionGroup } from “react-transition-group”;

function App() {

const [tasks, setTasks] = useState([

{ id: uuidv4(), task: “Buy Books” },

{ id: uuidv4(), task: “Finish Assignment” },

{ id: uuidv4(), task: “Go to the Gym” },


const [newTask, setNewTask] = useState(“”);

function addTask() {

if (newTask.trim() === “”) {



setTasks([…tasks, { id: uuidv4(), task: newTask }]);



function deleteTask(taskId) {

setTasks(tasks.filter((task) => task.id !== taskId));


return (

To-Do List



onChange={(e) => setNewTask(e.target.value)}


{tasks.map((task) => (

onClick={() => deleteTask(task.id)}

style={{ cursor: “pointer” }}







The above code import UUID and other required dependencies and declares a new state called ‘tasks,’ which is an array of objects. Each object in the ‘tasks’ array has a unique ID generated by the ‘uuidv4() function.

We also create a state for ‘newTask’ and use it to add a new task to the ‘tasks’ array when the ‘Add’ button is clicked. To remove a task item, we use the ‘deleteTask()’ method, which filters out the task with the matching ID.

The ‘map()’ function is used to display all the tasks in the to-do list, and each item is wrapped in a ‘CSSTransition’ component, which provides fade-in and fade-out animation when an item is added or deleted from the to-do list.

Creating a Note-Taking App Using NPM UUID in ReactJS

Note-taking apps enable users to store and manage information, including texts, images, and links, all in one place. In this section, we will see how to create a note-taking app using NPM UUID and other third-party dependencies.

Dependencies Needed for Creating the App

We will use the Material-UI package to create a text editor and a MARKDOWN preview panel. Well import and use the react-markdown package to render markdown content in the preview panel.

Follow the code below to install Material-UI and React-markdown in your application. “`

npm install material-ui

npm install react-markdown


Using UUID for Note Identification and Management

To enable the creation, editing and deletion of notes, we’ll require several states. The “notes” state, an object, keeps track of all the notes in the application, including the ID, title and text.

We’ll use the current note’s ID state to keep track of any note being edited. Whenever a user clicks on the “New Note” button, we create a new note with a unique ID using the UUID function.

Follow the code below to see how we use UUIDs in creating notes in our note-taking app.


import { useState } from “react”;

import { v4 as uuidv4 } from “uuid”;

import { Grid, Paper, TextField, Button } from “@material-ui/core”;

import ReactMarkdown from “react-markdown”;

function App() {

const [notes, setNotes] = useState({});

const [currentNoteID, setCurrentNoteID] = useState(“”);

const [currentNoteTitle, setCurrentNoteTitle] = useState(“”);

const [currentNoteText, setCurrentNoteText] = useState(“”);

function newNote() {

const id = uuidv4();


setNotes({ …notes, [id]: { id: id, title: “”, text: “” } });


function onDeleteNote() {

const newNotes = { …notes };

delete newNotes[currentNoteID];






function onChange(event, notePart) {

if (notePart === “title”) {


} else {





[currentNoteID]: {


[notePart]: event.target.value,




return (

Note Taking App


{Object.keys(notes).map((id) => (






onChange={(e) => onChange(e, “title”)}


label=”Note Text”




onChange={(e) => onChange(e, “text”)}



{currentNoteID && (





The above code imports Material-UI, React-markdown and other required dependencies and defines the ‘notes’ state variable as an object containing all the notes.

We then create a state for ‘currentNoteID’ that keeps track of the ID of the note being currently edited and use the UUID function to assign a unique ID to each new note created in the ‘newNote()’ function. The onChange() function is used to update the state of the note being edited so that the content is correctly reflected in the text and markdown view portions of the note-taking app.

The onDeleteNote() function is used to delete the current note along with its ID, title, and text.


In conclusion, we have seen how we can create a to-do list app and a note-taking app using NPM UUID in ReactJS. The use of UUIDs in these applications allows us to maintain uniqueness while generating IDs, which is essential for app building.

Moreover, it also enables better communication between different components, making our applications more efficient and user-friendly.


UUIDs (Universal Unique Identifiers) have become a vital tool in app-building, enabling us to create unique identification for various components in an app. The use of UUIDs allows for better communication between different elements and helps manage extensive lists, categories, and subcategories.

In summary, UUIDs provide excellent advantages for app-building. They offer a secure way to identify and manage different elements in an application, allowing for better data management, organization, and bookkeeping.

Using UUIDs for unique identification of elements makde our applications more efficient, user-friendly, and secure, reducing conflicts that arise when similar components have the same identifier. The use of UUIDs has the added benefit of being random and unique while remaining simple and practical.

It helps maintain the flow of data across different components and improves application functions and user experience. UUIDs are easy to implement and integrate with any app-building platform and thus make application development faster and more efficient.

UUIDs are useful in e-commerce applications, where multiple products need proper categorization. With UUIDs, each product can have a unique code identifying it, which makes it easier to differentiate products and arrange them in categories and subcategories.

UUIDs also ensure that similarly named products or with similar feature specifications have different IDs and can be managed independently. In application development, UUIDs are increasingly used to select and manage items in forms, tables, and other components.

Each selection has a unique identifier, which makes it easier to manage data in real-time and avoid conflicts that may arise due to using the same ID.

Furthermore, large application systems can have millions of records and millions of users.

It is essential to have a unique identifier for each user to uniquely identify them, associate them with their data, and provide better access control. UUIDs can solve these problems of scalability and efficiency by providing a unique identifier that can be stored, sorted and separated with ease.

In conclusion, UUIDs provide an effective and simple solution to the problem of unique identification, improving application functions, performance speed, and user experience. They add value to an application by enabling better communication between different components and managing extensive data efficiently.

Therefore, using UUIDs is an indispensable tool in app-building, especially for handling large and complex projects with many records and users. UUIDs (Universal Unique Identifiers) are essential in app-building, enabling developers to create unique identification for various components in their applications.

The importance of UUID lies in the efficient communication between different elements, managing extensive lists, categories, and subcategories, and enabling better data organization. UUIDs are easy to implement and make application development faster, efficient, and secure, improving performance speed, and user experience.

Therefore, consider using UUIDs as an indispensable tool in app-building, especially for handling large and complex projects with many records and users.

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