<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Product Catalogue</title>
    <style>
        .catalog-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            padding: 20px;
        }
        .product {
            width: 200px;
            border: 1px solid #dddddd;
            padding: 10px;
            margin: 10px;
            text-align: center;
            position: relative;
        }
        .product img {
            max-width: 100%;
            height: auto;
        }
        .delete-button {
            position: absolute;
            top: 5px;
            right: 5px;
            background-color: #dc3545;
            color: white;
            border: none;
            padding: 5px 10px;
            cursor: pointer;
            border-radius: 50%;
        }
    </style>
</head>
<body>
    <h1>Product Catalogue</h1>

    <form id="addProductForm">
        <label for="productName">Product Name:</label>
        <input type="text" id="productName" name="productName">
        
        <label for="productPrice">Price:</label>
        <input type="text" id="productPrice" name="productPrice">
        
        <label for="productDescription">Description:</label>
        <input type="text" id="productDescription" name="productDescription">
        
        <label for="productImage">Choose Image:</label>
        <input type="file" id="productImage" name="productImage" accept="image/*">
        
        <button type="button" onclick="addProduct()">Add Product</button>
    </form>

    <div class="catalog-container" id="catalogContainer">
        <!-- Product items will be dynamically added here -->
    </div>

    <script>
        // Load saved product catalogue data when the page loads
        window.onload = function() {
            var savedProducts = JSON.parse(localStorage.getItem('productCatalogue'));
            if (savedProducts) {
                savedProducts.forEach(function(product) {
                    addProductToCatalog(product);
                });
            }
        };

        function addProduct() {
            var productName = document.getElementById('productName').value;
            var productPrice = document.getElementById('productPrice').value;
            var productDescription = document.getElementById('productDescription').value;
            var productImage = document.getElementById('productImage').files[0];

            if (!productImage) {
                alert("Please choose an image for the product.");
                return;
            }

            var reader = new FileReader();
            reader.onload = function(event) {
                var product = {
                    name: productName,
                    price: productPrice,
                    description: productDescription,
                    image: event.target.result
                };

                addProductToCatalog(product);
                
                // Save the product to local storage
                var savedProducts = JSON.parse(localStorage.getItem('productCatalogue')) || [];
                savedProducts.push(product);
                localStorage.setItem('productCatalogue', JSON.stringify(savedProducts));
            };
            reader.readAsDataURL(productImage);
        }

        function addProductToCatalog(product) {
            var productDiv = document.createElement('div');
            productDiv.classList.add('product');
            var productHTML = `
                <img src="${product.image}" alt="${product.name}">
                <h3>${product.name}</h3>
                <p>$${product.price}</p>
                <p>${product.description}</p>
                <button class="delete-button" onclick="deleteProduct(this)">X</button>
            `;
            productDiv.innerHTML = productHTML;
            document.getElementById('catalogContainer').appendChild(productDiv);
        }

        function deleteProduct(button) {
            var productDiv = button.parentElement;
            productDiv.remove();
            // Update local storage after deletion
            var productName = productDiv.querySelector('h3').textContent;
            var savedProducts = JSON.parse(localStorage.getItem('productCatalogue'));
            savedProducts = savedProducts.filter(function(product) {
                return product.name !== productName;
            });
            localStorage.setItem('productCatalogue', JSON.stringify(savedProducts));
        }
    </script>
</body>
</html> 
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HTML Online Editor & Compiler

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About HTML

HTML(Hyper Text Markup language) is the standard markup language for Web pages, was created by Berners-Lee in the year 1991. Almost every web page over internet might be using HTML.

Syntax help

Fundamentals

  • Any HTML document must start with document declaration <!DOCTYPE html>
  • HTML documents begin with <html> and ends with </html>
  • Headings are defined with <h1> to <h6> where <h1> is the highest important heading and <h6> is the least important sub-heading.
  • Paragrahs are defined in <p>..</p> tag.
  • Links are defined in <a> tag.

    Example:

    <a href="https://onecompiler.com/html">HTML online compiler</a>
    
  • Images are defined in <img> tag, where src attribute consists of image name.
  • Buttons are defined in <button>..</button> tag
  • Lists are defined in <ul> for unordered/bullet list and <ol> for ordered/number list, and the list items are defined in <li>.

HTML Elements and Attributes

  • HTML element is everything present from start tag to end tag.
  • The text present between start and end tag is called HTML element content.
  • Anything can be a tagname but it's preferred to put the meaningful title to the content present as tag name.
  • Do not forget the end tag.
  • Elements with no content are called empty elements.
  • Elements can have attributes which provides additional information about the element.
  • In the below example, href is an attribute and a is the tag name.

    Example:

    <a href="https://onecompiler.com/html">HTML online compiler</a>
    

CSS

CSS(cascading style sheets) describes how HTML elements will look on the web page like color, font-style, font-size, background color etc.

Example:

Below is a sample style sheet which displays heading in green and in Candara font with padding space of 25px.

body{
  padding: 25px;
}
.title {
	color: #228B22;
	font-family: Candara;
}

HTML Tables

  • HTML Tables are defined in <table> tag.
  • Table row should be defined in <tr> tag
  • Table header should be defined in <th> tag
  • Table data should be defined in <td> tag
  • Table caption should be defined in <caption> tag

HTML-Javascript

  • Javascript is used in HTML pages to make them more interactive.
  • <script> is the tag used to write scripts in HTML
  • You can either reference a external script or write script code in this tag.

Example

<script src="script.js"></script>