How to Create a Star Rating System - Code Masala Bytes - Helping Developers Solve Real World Problems

A star rating system is a simple and easy way for users to rate content such as products, articles, or services. It enhances the user experience by providing a visual indicator of quality or satisfaction. In this guide, we’ll show you how to create a rating system. Dynamically score wires using HTML, CSS, and JavaScript.

Prerequisites

Before you start Make sure you have a basic understanding of:

HTML: To create the structure of a web page.
CSS: for styling elements.
JavaScript: To add interactivity to the star rating system.

Approach

Follow these steps to create a star rating system.

HTML: Create layouts using div and span elements.
CSS: Style stars and output text for a visually appealing interface.
JavaScript: Added functionality to dynamically record and display user ratings.

Step-by-Step Implementation

HTML Code

The HTML structure consists of a string represented by the span element and a section to display the selected score.

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Star Rating</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="rating-container">
        <span class="star" onclick="gfg(1)">★</span>
        <span class="star" onclick="gfg(2)">★</span>
        <span class="star" onclick="gfg(3)">★</span>
        <span class="star" onclick="gfg(4)">★</span>
        <span class="star" onclick="gfg(5)">★</span>
    </div>
    <div id="output">Rating is: 0/5</div>
    <script src="script.js"></script>
</body>
</html>

CSS Code

Format stars and output text to make it look beautiful.

CSS

/* style.css */
body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 50px;
}

.rating-container {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.star {
    font-size: 2rem;
    cursor: pointer;
    color: lightgray;
    transition: color 0.2s;
}

.star.one, .star.two, .star.three, .star.four, .star.five {
    color: gold;
}

#output {
    margin-top: 20px;
    font-size: 1.2rem;
    color: #333;
}

JavaScript Code

Use JavaScript to handle click events and dynamically update star characters and rating output.

JavaScript

// script.js

// Access the star elements and output container
let stars = document.getElementsByClassName("star");
let output = document.getElementById("output");

// Function to update the rating
function gfg(n) {
    remove();
    for (let i = 0; i < n; i++) {
        stars[i].className = `star ${['one', 'two', 'three', 'four', 'five'][n - 1]}`;
    }
    output.innerText = `Rating is: ${n}/5`;
}

// Function to remove existing styles
function remove() {
    for (let i = 0; i < stars.length; i++) {
        stars[i].className = "star";
    }
}

How It Works

HTML Structure:

Five span elements represent the stars.
The onclick attribute calls the gfg() function to handle the rating.

2. CSS Styling:

Dynamic classes (one, two, etc.) are added to change the color of the stars when clicked.
The .star class styles the default stars.

3. JavaScript Functionality:

The gfg() function updates the class of each star up to the selected rating.
The remove() function resets the star styles before applying the new rating.

Conclusion

Creating a star rating system with HTML, CSS, and JavaScript is a great way to enhance your web development skills. By following this guide, you’ll be able to implement a dynamic, user-friendly feature on your website. Start coding and make your projects shine!

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