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Article Introduction：Use the session to store the visitor shopping cart, and the database stores the logged-in user shopping cart for persistence; 2. Create a cart table to store user shopping cart data; 3. Create a CartService service class to encapsulate the addition, deletion, modification and search logic; 4. Create a CartController controller to handle shopping cart operations; 5. Define routes in web.php; 6. Create a Blade template to display the cart content; 7. Merge the session shopping cart to the database when the user logs in. This solution implements a hybrid shopping cart system that supports visitors and certified users, and is durable, scalable and meets practical application needs.

2025-07-29 comment 0  770

Article Introduction：The steps to build an efficient shopping cart system using sessions include: 1) Understand the definition and function of the session. The session is a server-side storage mechanism used to maintain user status across requests; 2) Implement basic session management, such as adding products to the shopping cart; 3) Expand to advanced usage, supporting product quantity management and deletion; 4) Optimize performance and security, by persisting session data and using secure session identifiers.

2025-05-01 comment 0  677

Article Introduction：Building a Dynamic Shopping Cart with jQuery and a Spring Boot REST API Modern web apps require seamless frontend-backend communication. This tutorial demonstrates how to integrate API calls into a jQuery-based frontend for a Spring Boot REST API-pow

2025-01-28 comment 0  535

Article Introduction：Whether to choose an array or a List depends on the scene. 1. Use arrays first when data is fixed, because the fixed-length feature is lighter, suitable for graphics processing, underlying API and other scenarios; 2. Use List when dynamic expansion or frequent addition and deletion, because it automatically expands and provides rich methods to improve development efficiency; 3. In terms of performance, array memory is more compact, List has management overhead but can be optimized through pre-allocated capacity; 4. The access speeds are similar, but the array does not support direct addition and deletion, and the inter-insertion efficiency of List is low. Just make reasonable choices based on the data volume, operating frequency and performance requirements.

2025-07-22 comment 0  163

Article Introduction：React is widely used in e-commerce, social media and data visualization. 1) E-commerce platforms use React to build shopping cart components, use useState to manage state, onClick to process events, and map function to render lists. 2) Social media applications interact with the API through useEffect to display dynamic content. 3) Data visualization uses react-chartjs-2 library to render charts, and component design is easy to embed applications.

2025-04-17 comment 0  976

Article Introduction：This tutorial is intended to guide developers how to efficiently delete HTML elements in jQuery operations, especially for the need to clean up redundant content after cloning operations. The article elaborates on a variety of element deletion strategies, including deletion methods based on selectors, relative paths and attributes. In addition, it also introduces how to intuitively output the HTML content of jQuery objects in a browser console (such as Firefox Scratchpad) to facilitate debugging and verifying the results of DOM operations. Through this article, readers will master practical skills in dealing with dynamic DOM.

2025-08-05 comment 0  213

Article Introduction：std::vector in C is a dynamic array that can be automatically resized. 1. It belongs to the standard template library (STL), which is often used to store and manage elements; 2. You can declare an empty vector by specifying the type or assign values ??with an initialized list; 3. Support index access to elements, and use .at() to perform out-of-bounds checks; 4. Provide .push_back(), .pop_back(), .insert(), .erase() and other methods to achieve dynamic addition and deletion; 5. Use .size(), .capacity(), .reserve(), and .shrink_to_fit() to manage capacity and memory; 6. Support looping through indexes, iterators or scope for

2025-07-03 comment 0  227

Article Introduction：List in programming is a basic data structure used to store multiple ordered elements and supports different types and dynamic modifications. For example, lists in Python can be accessed through indexes and are suitable for frequent addition and deletion scenarios; in daily life, List is used to clearly list tasks or items, such as to-do items, and is often sorted by priority or time; the difference between List and Array and Set is its dynamicity, flexibility and allows for duplicate values.

2025-06-25 comment 0  374

Article Introduction：This article explores in-depth efficient ways to dynamically modify SVG properties and add new nodes in Next.js or React applications. By directly defining the SVG structure as a React component, we can flexibly control the text, style, location and dynamic addition and deletion nodes of the elements inside the SVG, thereby achieving highly customizable and interactive SVG content, avoiding the complexity of traditional DOM operations and seamlessly integrating with React's declarative paradigm.

2025-08-05 comment 0  797

Article Introduction：When the picture does not need to be described, there are three main situations: First, the picture is only decorative elements, such as background patterns or icons with no practical significance, and it will not affect information transmission after deletion; Second, the picture content has been clearly described in adjacent text to avoid repeated interference with screen reader users; Third, the picture is used as part of a button or link, and there are texts next to it to illustrate its function, such as a magnifying glass icon or shopping cart icon next to the search box. The rational use of the alt attribute can improve the accessibility and SEO effect of web pages. The key is to judge whether the picture has substantial significance.

2025-06-29 comment 0  638

Article Introduction：It is not difficult to learn PHP from scratch. The key is to clarify the direction and follow the steps. First of all, it is necessary to clarify that PHP is mainly used for dynamic web development, which is especially suitable for interaction with databases, such as implementing user registration, login and other functions. The first step is to build an environment. It is recommended to use XAMPP or phpStudy to quickly run PHP files, and to improve efficiency with editors such as VSCode. When learning grammar, you should focus on mastering the basic structure, including conditional judgment, loops, function definitions and array operations, and you don’t have to memorize everything by rote. Finally, you need to practice through small projects, such as leaving a message book or logging into the system, contact form submission, database connection, and data addition, deletion, modification and inspection, and gradually improve your practical capabilities.

2025-07-18 comment 0  289

Article Introduction：Intl.PluralRules is an API used in JavaScript to judge plural numbers based on the locale, solving the problem of different plural rules in multiple locale environments. Unlike the hard-coded splicing "s", it supports complex plural classifications in multiple languages, such as Arabic zero, one, two, few, etc. When using it, first create an instance and call the select method to obtain the classification, and then select the corresponding copy from the predefined map. Commonly found in scenarios such as number of comments, shopping cart prompts and notification messages. It can be combined with the i18n library or implemented lightweight solutions on its own, and dynamic text display can be realized through structured data combined with replacement logic. It should be noted that the plural categories supported by each language are different, and the API should be relied on instead of manual ones.

2025-07-26 comment 0  267

Article Introduction：Choosing ArrayList or LinkedList in Java depends on the usage scenario. 1. When accessing elements frequently through indexes, ArrayList should be selected, because it is based on dynamic array implementation and supports fast random access of O(1) time complexity; 2. When performing intermediate insertion or deletion operations frequently, LinkedList should be selected, because it is based on a bidirectional linked list implementation and supports O(1) time complexity operations (if there are already node references); 3. In terms of memory, ArrayList is more compact, while LinkedList causes higher memory overhead due to storing additional pointers; 4. The iterative performance of the two is similar, but ArrayList is more suitable for repeated get(i) traversal methods. Therefore, the root

2025-07-12 comment 0  529

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  705

Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  867

Article Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  876

Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI What is the Interview Questions CLI? The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview

2025-01-10 comment 0  1494

Article Introduction：Improved Methods for Trimming Leading Zeros in SQL ServerThe conventional approach for trimming leading zeros in SQL Server involves employing the...

2025-01-10 comment 0  711

Article Introduction：ShouldSerialize() vs Specified Conditional Serialization PatternConditional serialization is crucial to selectively control serialization...

2025-01-10 comment 0  1485

Article Introduction：Recursive Query Resulting in Recursion Depth Limit ExceededThis query faced a recurring error due to exceeding the maximum recursion limit of 100....

2025-01-10 comment 0  1304