Introduction
Hello, fellow developers! I'm excited to present my latest project: a QR Code Generator. This project is a great way to dive into JavaScript, focusing on how to dynamically generate QR codes based on user input. Whether you're new to web development or looking to enhance your JavaScript skills, this QR Code Generator project is an excellent opportunity to learn and create something useful.
Project Overview
The QR Code Generator is a web-based application that allows users to generate QR codes from any text input. This project demonstrates how to create a simple and interactive user interface, integrate third-party APIs, and handle user inputs effectively.
Features
User-Friendly Interface: Simple and clean design that makes it easy to generate QR codes.
Dynamic QR Code Generation: Instantly generates a QR code based on the text input provided by the user.
Responsive Design: Ensures a consistent experience across various devices and screen sizes.
Technologies Used
HTML: Structures the web page and input elements.
CSS: Styles the user interface, ensuring a clean and responsive design.
JavaScript: Manages the logic for generating QR codes and handling user interactions.
Project Structure
Here's a quick look at the project structure:
QR-Code-Generator/
├── index.html
├── style.css
└── script.js
index.html: Contains the HTML structure for the QR Code Generator.
style.css: Includes CSS styles to enhance the appearance and responsiveness of the application.
script.js: Manages the QR code generation logic and user interactions.
Installation
To get started with the project, follow these steps:
Clone the repository:
CODEgit clone https://github.com/abhishekgurjar-in/QR-Code-Generator.git
Open the project directory:
CODEcd QR-Code-Generator
Run the project:
- Open the
index.htmlfile in a web browser to start using the QR Code Generator.
- Open the
Usage
Open the website in a web browser.
Enter text in the input field to generate a QR code.
Click the "Generate QR Code" button to see the QR code generated based on the entered text.
Scan the QR code with any QR code reader to view the encoded text.
Code Explanation
HTML
The index.html file provides the basic structure of the QR Code Generator, including the input field and buttons for generating the QR code. Here’s a snippet:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>QR Code Generator</title>
<link rel="stylesheet" href="style.css" />
<script src="script.js" defer></script>
</head>
<body>
<div class="container">
<div class="box">
<section class="upper">
<h1>QR Code Generator</h1>
<p>Paste text to create QR Code</p>
</section>
<form id="qrForm">
<input
id="qrInputText"
type="text"
name="qrText"
placeholder="Enter Text"
/>
<button id="generateBtn" type="submit">Generate QR Code</button>
</form>
<section id="qrContainer" class="qr_container">
<img id="qrImage" src="./qr.webp" alt="QR Code" />
</section>
</div>
</div>
<div class="footer">
<p>Made with ❤️ by Abhishek Gurjar</p>
</div>
</body>
</html>
CSS
The style.css file styles the QR Code Generator, providing a modern and user-friendly layout. Here are some key styles:
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600;700&display=swap");
:root {
--primary: #47185c;
--primary-dark: #14001d;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
font-family: "Poppins", sans-serif;
}
body {
background-color: var(--primary);
}
.container {
display: grid;
place-items: center;
height: 80vh;
}
.box {
padding: 20px;
width: 400px;
background-color: white;
}
.upper h1 {
font-size: 32px;
font-weight: 400;
line-height: 32px;
}
form {
display: flex;
flex-direction: column;
align-items: center;
gap: 10px;
margin-top: 10px;
}
form input {
width: 100%;
height: 40px;
padding: 10px 15px;
}
form button {
width: 100%;
height: 40px;
padding: 10px 15px;
background-color: var(--primary);
border: none;
color: white;
opacity: 0.9;
transition: 0.3s ease-in;
}
.qr_container {
border: 1px solid var(--primary);
display: flex;
justify-content: center;
height: 0;
opacity: 0;
transition: opacity 0.3s ease-in, height 0.1s ease;
}
.qr_container.show {
padding: 10px;
height: 150px;
opacity: 1;
}
.qr_container img {
height: 100%;
}
.footer {
color: white;
margin: 50px;
text-align: center;
}
JavaScript
The script.js file manages the logic for generating the QR codes and handling user interactions. Here’s a snippet:
const qrFormEl = document.getElementById("qrForm");
const qrImageEl = document.getElementById("qrImage");
const qrContainerEl = document.getElementById("qrContainer");
const qrInputTextEl = document.getElementById("qrInputText");
const generateBtnEl = document.getElementById("generateBtn");
const renderQRCode = (url) => {
if (!url) return;
generateBtnEl.innerText = "Generating QR Code...";
qrImageEl.src = url;
qrImageEl.addEventListener("load", () => {
qrContainerEl.classList.add("show");
generateBtnEl.innerText = "Generate QR Code";
});
};
qrFormEl.addEventListener("submit", (event) => {
event.preventDefault();
const formData = new FormData(qrFormEl);
const text = formData.get("qrText");
const qrCodeUrl = `https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=${text}`;
renderQRCode(qrCodeUrl);
});
qrInputTextEl.addEventListener("keyup", () => {
if (!qrInputTextEl.value.trim()) {
qrContainerEl.classList.remove("show");
}
});
Live Demo
You can check out the live demo of the QR Code Generator
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