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Article Introduction：How to use native JS to achieve the effect of membership of enterprise WeChat tree organization? In modern web development, the display demand of tree structures is very common, especially...

2025-04-05 comment 0  516

Article Introduction：The answer is: you should first master native JavaScript and then learn the framework. Because frameworks are just tools, JS is the foundation, not understanding JS will make it difficult to troubleshoot bugs and deal with interview questions; understanding native JS can help you better understand the design ideas of the framework; learning to be able to operate DOM, handle events, use Promise, understand this and prototype chains, and write simple interaction functions can start learning the framework; it is recommended to start with HTML CSS native JS first, learn while doing, read more documents, read less quick courses, and write projects by hand.

2025-07-01 comment 0  563

Article Introduction：ShadowDOM is a browser-native component encapsulation mechanism used to isolate structures and styles; VirtualDOM is a programming technique that optimizes UI updates. 1. ShadowDOM belongs to WebComponents, creates independent and isolated DOM trees to prevent style pollution, and is suitable for building reusable components such as or. 2. VirtualDOM is implemented by frameworks such as React, which simulates real DOM in memory, minimizes update operations through the Diff algorithm, and improves performance. 3. The core difference between the two is their different functions: ShadowDOM focuses on packaging, while VirtualDOM focuses on efficient updates; different implementation methods: the former is native browser support, while the latter is JS simulation; application field

2025-07-07 comment 0  407

Article Introduction：Webpack is suitable for large applications, with comprehensive functions but complex configuration; Rollup focuses on packaging libraries, with small output size and strong Tree-shaking; Vite is based on native ES modules, with fast development speed and suitable for modern frameworks. 1. Webpack is centered on "Everything is a module" and supports code segmentation and rich plug-ins. It is suitable for complex projects but slow to build; 2. Rollup supports ESM by default, outputs clean code, suitable for NPM library release, but weakly handles non-JS resources; 3. Vite uses browser native ESM, does not package in the development stage, starts quickly and supports mainstream frameworks, suitable for new projects, but TS and migration support needs to be improved.

2025-07-17 comment 0  147

Article Introduction：WebAssembly (Wasm) is a binary instruction format suitable for image and video processing due to its near-native execution speed. 1. It supports compiling into intermediate formats in multiple languages, and runs efficiently in the browser; 2. Image and video processing involves a large amount of calculations, and Wasm is more efficient than JavaScript; 3. Select language and tool chain when using it, encapsulate functions to receive image data, and JS passes data to Wasm for processing and then passes the results back; 4. Video processing requires controlling frame rate, synchronization and memory management, JS grabs frames and passes them to Wasm for processing and then synthesis; 5. Pay attention to data format conversion, memory allocation and release, performance bottleneck positioning, and browser compatibility issues.

2025-07-17 comment 0  966

Article Introduction：1. When reading cookies, you can get a string through document.cookie and parse it into an object; 2. When setting cookies, you need to assign a value to document.cookie and add expiration time, path and other options; 3. When deleting cookies, you need to set the expired time and ensure clearing through the same path domain name; 4. Notes include not having sensitive information, processing encoding, limiting length and adding security attributes. The full text revolves around the methods and details of native JS operating cookies.

2025-07-15 comment 0  652

Article Introduction：A practical guide to improving the performance of React Native applications Key Points Balancing the animation processing of JavaScript (JS) threads and main threads to improve application performance. Use the useNativeDriver attribute and InteractionManager to manage this balance. Avoid unnecessary component re-rendering. Tips include: memorizing components and functions, using useCallback wisely, avoiding updating local states with Redux states, and avoiding inline functions. Optimize images to increase application speed. Use SVG icons and images, WebP image format (lossless image quality), and cache images to speed up rendering. Using stable npm packages and Fla

2025-02-08 comment 0  397

Article Introduction：Nanny State: A streamlined Vanilla JS state management library Nanny State is a mini library designed to simplify the process of building state-based web applications using native JavaScript. It's similar to React, but with less overhead, no need to learn new syntax. It uses a single application-wide state object instead of letting each component have its own state. It was inspired by HyperApp and has many similarities with Elm. This article will explain how Nanny State works and demonstrate its functionality with several examples. Key points: Nanny State Introduction: Nanny S

2025-02-09 comment 0  320

Article Introduction：JavaScript library is a pre-written collection of code used to help developers complete common tasks efficiently. Its core functions include: 1. Simplify DOM operations; 2. Handle user interaction; 3. Send HTTP requests. Popular JS libraries include: 1.jQuery is suitable for small projects or legacy systems; 2.React is suitable for building dynamic user interfaces; 3.Vue.js is suitable for progressive integration; 4.Axios simplifies API calls. Learning suggestions: 1. If you want to master the basics, you must first learn native JS; 2. jQuery is available for small websites; 3. React is the first choice for modern front-end development; 4. Axios can be selected only if you need API calls. It is recommended that most developers give priority to learning React, but the premise is to master variables and cycle

2025-06-27 comment 0  210

Article Introduction：The new HTML5 input type improves the form experience, the main methods include: 1. Use email and url types to realize automatic format verification and optimize the mobile keyboard; 2. Use number and range to process numerical input, which are suitable for accurate values ??and sliding selection respectively; 3. Use date series types to call the native date selector to improve time input efficiency. These features reduce the burden of front-end verification, but basic verification still needs to be supplemented by the server. Some types need to be combined with JS libraries to ensure compatibility on old devices.

2025-07-11 comment 0  384

Article Introduction：When using HTML5 inputtype="date", the core reasons and solutions for inconsistent date format display are as follows: 1. You must always use the YYYY-MM-DD format to set and get the value, otherwise it may cause recognition failure; 2. The browser display format varies according to system and region settings, but does not affect the actual value; 3. If you need to uniformly display the format, you should use a third-party library to replace the native controls; 4. Server-side verification is required and a fallback solution is provided for unsupported browsers, such as using the text type to cooperate with the JS plug-in to handle it.

2025-07-05 comment 0  578

Article Introduction：How to set custom error message with JavaScript? 1. Use the setCustomValidity() method combined with native form verification, and set prompts for specific input conditions through JavaScript. For example, when the username is less than 3 characters, it prompts "the username needs at least 3 characters"; 2. Combine HTML attributes (such as required, pattern) and JS supplementary verification, and return targeted prompts according to different reasons for verification failure. For example, when the email format is inconsistent, "the email must end with @example.com"; 3. Note that after each verification, you need to call setCustomValidity('') to clear the error message and select the appropriate event (input and i)

2025-07-12 comment 0  487

Article Introduction：Bun is a modern JavaScript/TypeScript runtime designed to provide faster performance and built-in toolset than Node.js. 1. It uses the JavaScriptCore engine, which starts faster and has lower memory footprint; 2. It has built-in packager, test framework and dependency manager, without additional installation tools; 3. It is compatible with some Node.js API, suitable for fast script development, small services and simplified building toolchain; 4. It is simple to install and use, and supports running JS/TS/JSX files and dependency installation; 5. It is currently suitable for projects that do not rely on complex Node.js native modules, and is not yet suitable for large production environments.

2025-07-16 comment 0  473

Article Introduction：WebGPU is the preferred solution for H5 to implement PBR because it provides the underlying GPU access capability and supports high-quality lighting and material effects. 1. Support prerequisites include browser compatibility (Chrome and Edge native support) and using WGSL to write shaders to process albedo, metallic and other properties; 2. The rendering process includes preparing G-Buffer, sampling textures and fragment shaders BRDF calculations, and combining IBL technology to enhance the sense of reality; 3. Optimization suggestions include multiplexing texture channels, rational use of Mipmap, dynamic adjustment of quality levels, early compilation of shaders, and paying attention to memory management; 4. Recommended tools include wgpu-js, Babylon.js and glTF standard model formats,

2025-07-16 comment 0  600

Article Introduction：To create a standout JavaScript portfolio, choosing a project that demonstrates technical capabilities and problem-solving capabilities is the most important thing. 1. Build a to-do application with local storage, covering task addition and deletion, completion status, local saving, and can add filtering, drag-and-drop sorting or dark modes. 2. Use the API to create a weather dashboard, obtain user locations, display weather data, and support city search and error handling. 3. Develop a mini game such as tic toe or memory matching game to exercise logic and state management. 4. Use native JS or framework to build a personal portfolio website, including about me, project display and contact forms. Ensure that each project has complete functions, clear documentation, diverse technologies and easy to run, and finally deploy and display your strength online.

2025-07-07 comment 0  265

Article Introduction：H5WebAssembly makes porting game engines to the web page efficient and practical because their performance is close to native and can interact seamlessly with JavaScript. Its core advantages include high execution efficiency, fine memory control, and cross-platform compatibility; better performance than asm.js, supports reuse of C/C code bases, and simple deployment without plug-ins. Common challenges in porting are: 1. The graphics API does not support WebGL/WebGPU, and use it instead; 2. The file system is restricted and requires a virtual file system or IndexedDB; 3. The thread support is unstable and needs to be handled with caution; 4. Audio and input events need to be bridged through JS. The recommended steps to start the porting are: 1. Use the Emscripten toolchain; 2. Verify from small modules

2025-07-17 comment 0  685

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  673

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  812

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  823

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  1440