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Article Introduction：Develop the implementation method of command class on Konva.js. Based on the use of the Konva.js library to develop the drawing graphics system, if you want to further develop...

2025-04-04 comment 0  400

Article Introduction：Laravel 11.35 introduces the Uri class based on the PHP League URI library. Uri simplifies the process of manipulating and processing URIs in Laravel applications and provides some convenient features about named routing. Basic Operation The core function of the Uri class is to create and manipulate URI strings, including queries, fragments, and paths: use Illuminate\Support\Uri; $uri = Uri::of('https://laravel-news.com') ->withPath('links') ->wit

2025-03-05 comment 0  828

Article Introduction：Carbon: PHP date and time processing tool Carbon is a lightweight PHP library for simplifying the processing of dates and times. It is based on and extends the core DateTime class and adds many convenient methods to make date-time operation easier. This article will introduce the basic usage of Carbon and demonstrate how to use it in a real project. Core points: Carbon is a library designed for PHP date and time operations, extends the core DateTime class and adds user-friendly methods to provide a more intuitive experience. The library can be installed using Composer and can be instantiated from strings, timestamps, or other DateTime or Carbon instances

2025-02-16 comment 0  518

Article Introduction：Bootstrap is a front-end framework developed by Twitter that integrates HTML, CSS and JavaScript to help developers quickly build responsive websites. Its core functions include: Grid system and layout: based on 12-column design, using flexbox layout, and supporting responsive pages of different device sizes. Components and styles: Provide a rich library of component, such as buttons, modal boxes, etc., and you can achieve beautiful effects by adding class names. How it works: Rely on CSS and JavaScript, CSS uses LESS or SASS preprocessors, and JavaScript relies on jQuery to achieve interactive and dynamic effects. Through these features, Bootstrap greatly improves development

2025-04-23 comment 0  942

Article Introduction：MixItUp 3: Web element filtering and sorting tool based on CSS animation MixItUp 3 is a powerful JavaScript library that uses CSS animation to filter and sort web elements, which is ideal for organizing content-rich websites such as portfolios, photo albums, and blogs. Core features of MixItUp 3: Dependency-free: MixItUp 3 does not depend on any other libraries and is easy to use. CSS animation: Use CSS animation to achieve smooth filtering and sorting effects. Highly customizable: Provides rich configuration options, allowing you to customize animation effects, add custom class names, create custom filtering and sorting buttons, and more. Cross-browser

2025-02-17 comment 0  996

Article Introduction：Using SourceGenerators in C# projects can improve performance, reduce reflections, and optimize development experience by generating code during compilation. Specific methods include: 1. Create a class library project and reference the necessary NuGet package; 2. Implement the ISourceGenerator interface and override the Initialize and Execute methods; 3. Check the class with a specific Attribute in Execute and generate code. Common uses include attribute notification, serialization support, dependency injection registration, and constant generation. Debugging skills include outputting logs, attaching compilation processes, and writing unit test verification generation code. Be careful to avoid complex logic affecting the construction speed and select appropriate technologies such as reflection or IL based on the scene.

2025-07-04 comment 0  249

Article Introduction：There are three common style processing methods in React: CSS-in-JS, CSSModules and global CSS. CSS-in-JS directly writes component styles through JavaScript files, supporting variables, conditions and dynamic styles, such as styled-components; CSSModules implements modular CSS through .module.css file to avoid class name conflicts; global CSS is suitable for small projects or legacy systems, but naming conflicts should be paid attention to. The selection should be based on project size and team preferences: select CSS-in-JS when dynamic style is needed, and select CSSModules when using normal CSS and module scope is needed. Small projects or old systems can

2025-07-15 comment 0  499

Article Introduction：Cerberus is a Python data verification library for verifying data of dictionary structures based on predefined schemas. 1. It is suitable for real-time verification of API requests, user input and sensor data; 2. When using it, you must first convert the data to a dictionary format, and then perform verification through the Validator class; 3. Supports rules such as field types, required items, minimum values, regular expressions, etc.; 4. Can handle nested structures and implement complex logic through custom extensions; 5. Pay attention to its throughput impact in high-performance scenarios.

2025-07-27 comment 0  1001

Article Introduction：This is different from JavaScript, and its value is determined at runtime based on the method of function calling. 1. When calling a normal function, this points to the global object (non-strict mode) or undefined (strict mode); 2. When calling a method, this points to the calling object; 3. In the constructor, this points to the newly created object. In addition, the arrow function inherits this through the lexical scope, while call, apply, and bind can explicitly bind this. This in Java always points to an instance of the class and cannot be changed.

2025-07-21 comment 0  765

Article Introduction：The digital currency trading market continues to evolve, providing users around the world with a way to participate in this emerging asset class. Choosing a suitable trading platform is crucial to the user's experience and asset security. Compliance, security, liquidity, and user interface friendliness are key factors in evaluating a digital currency trading application. The following is a list of global digital currency trading apps compiled in 2025 based on the current market conditions and widespread user feedback, listing the top ten commonly recognized formal virtual currency exchanges.

2025-07-03 comment 0  945

Article Introduction：The module mode encapsulates private state through closures, uses IIFE to create independent scopes and exposes limited interfaces, effectively avoiding global pollution and improving testability; 2. The factory mode concentrates object creation logic, returns different types of object instances according to parameters, reducing the client's dependence on specific classes; 3. The observer mode establishes a one-to-many event notification mechanism to decouple publishers and subscribers, and is suitable for event-driven systems; 4. The singleton mode ensures that there is only one instance of a class and provides global access points, which are often used in loggers, configuration management and other scenarios; 5. The decorator mode dynamically adds functions on the basis of not modifying the original object, supports separation of concerns, and can be used for cross-cutting logic such as performance monitoring, permission verification; the design mode should be selected based on specific requirements: encapsulate private numbers

2025-07-27 comment 0  486

Article Introduction：JAMstack is a modern front-end development architecture concept based on JavaScript, APIs and Markup, and Astro is its representative framework. It improves performance and maintainability by pre-built static pages, supports multi-frame component development and outputs pure HTML. Astro's core advantages include partial hydration, lightweight output, multi-frame support, Markdown integration and convenient deployment. 1. Install Node.js; 2. Run npmcreateastro@latest to create a project; 3. Select the plug-in and install the dependencies; 4. Start the development server. In actual development, attention should be paid to SEO settings, picture optimization, global style management, data acquisition and third-party library compatibility.

2025-07-31 comment 0  943

Article Introduction：The most direct way to confirm whether the browser supports a certain HTML5 feature is to use JavaScript detection. 1. Use Modernizr for feature detection: After introducing the Modernizr library, it will add the corresponding class to the tag, and can judge the support status through the Modernizr object; 2. Use native JavaScript to detect specific features: check whether there is a certain attribute or method in the global object, such as detecting canvas or localStorage; 3. Check the compatibility data on CanIUse: Visit caniuse.com to obtain the support of HTML5 features by different browsers, assist in decision-making and compatibility plan planning.

2025-07-14 comment 0  496

Article Introduction：In JavaScript, this behavior depends on the way the function is called. ① In regular functions, this is determined based on the calling context, such as when the object method is called, and when the object method is called, it points to the global object or undefined; ② The arrow function does not have this, and it inherits this from the outer scope, and is not suitable as an object method that needs to reference the object itself; ③ Common problems include losing this context in callback functions or event processing, which can be solved by .bind(), wrapping functions, etc.; ④ The ES6 class methods do not bind this by default, and need to be manually bound or use arrow functions to avoid context loss.

2025-07-01 comment 0  398

Article Introduction：The core goal of singleton pattern in Python is to ensure that only one instance of a class exists. It is suitable for scenarios such as configuration management, database connection pooling, etc. where global access points are required, and can avoid resource waste and inconsistency in status. Implementation methods include: 1. Use module-level variables (simplest, thread-safe but not flexible enough); 2. Use decorator (well-encapsulated but not thread-safe); 3. Use new method (controlling fine granularity but error-prone); 4. Use metaclass (consolidating multiple classes but complex). The choice should be based on the scenario trade-offs, paying attention to thread safety and testing complexity.

2025-07-22 comment 0  384

Article Introduction：Bootstrap is an open source front-end framework developed by Twitter, providing rich CSS and JavaScript components, simplifying the construction of responsive websites. 1) Its grid system is based on a 12-column layout, and the display of elements under different screen sizes is controlled through class names. 2) The component library includes buttons, navigation bars, etc., which are easy to customize and use. 3) The working principle depends on CSS and JavaScript files, and you need to pay attention to handling dependencies and style conflicts. 4) The usage examples show basic and advanced usage, emphasizing the importance of custom functionality. 5) Common errors include grid system calculation errors and style coverage, which require debugging using developer tools. 6) Performance optimization recommendations only introduce necessary components and customize samples using preprocessors

2025-05-08 comment 0  476

Article Introduction：The design system is implemented using Vue components, first defining the design token, then building a reusable Vue component, then creating a usage guide, and finally integrating it into the project. The first step is to set the tokens such as colors, fonts, spacing, etc., and store them in CSS variables or JS files; the second step is to create a basic component such as BaseButton that is unified naming and behavior based on the token, and use documents and tools such as Storybook for testing; the third step is to write detailed instructions on using components, including component application scenarios, form structures and examples; the fourth step is to package the component library into an NPM package or place it in a single warehouse, register global components through plug-ins and formulate code specifications to ensure smooth version control and team collaboration.

2025-07-20 comment 0  362

Article Introduction：To create a custom middleware, use the Artisan command to generate the class file, 1. Write a logical processing request, 2. Register the middleware in Kernel.php, 3. Apply and pass parameters in the route. Middleware is used to filter HTTP requests. Laravel has a variety of built-in middleware, and users can also create custom logic based on their needs, such as verifying user roles. After creation, it needs to be registered as global or routing middleware, and can be called through the middleware method in the routing, supporting multiple middleware and parameter chains. Notes include: Ensure that $next($request) is called, pay attention to the execution order, keep the logic single, and sufficient testing.

2025-07-22 comment 0  334

Article Introduction：There are three ways to copy files in Java. The first is to use FileInputStream and FileOutputStream, which is suitable for Java7 and earlier versions. By reading byte streams and writing to the target file, it is suitable for understanding the underlying principles but limited performance; the second is to use Files.copy(), which is recommended for Java7 and above versions. The code is concise and efficient, and FileChannel is used internally and supports whether to overwrite existing files; the third is to use ApacheCommonsIO tool class, which is suitable for projects that have been introduced to this library. It has simple operation but requires third-party dependencies to be added. The selection method should be determined based on the Java version, whether third-party libraries are allowed and specific performance requirements.

2025-07-21 comment 0  959

Article Introduction：In PHP, there are mainly two ways to define constants: define() function and const keyword. define() is a runtime function that can dynamically define constants at any location; while const is a language structure processed in the compilation stage and must be used directly in global or in classes and cannot be placed in conditional statements, loops or functions. The difference between the two is mainly reflected in: 1. define() supports dynamic definition, suitable for situations determined based on configuration files; 2. const is suitable for use in class definition constants and namespaces, which are more readable and organized and have slightly better performance; 3. Const needs to pay attention to scope issues when defining constants, such as namespace prefixes that cannot be omitted; 4. Both do not support modifying defined values, but define()

2025-07-17 comment 0  370