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Course 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

Course Introduction：The number of web applications in a single-page application architecture is increasing. This type of application loads the entire application into the browser as JavaScript. All interactions with the server are performed through an HTTP-based API that returns JSON documents. These applications often require some degree of user-restricted interaction, such as storing user profile details. Implementing this functionality in traditional HTML-based applications is relatively simple, but it is even more tricky in single-page applications that require authentication for each API request. This article will demonstrate a technique that uses the Passport.js library to implement social logins for multiple providers and thereby implement token-based authentication of subsequent API calls. All source code for this article is available from our Git

2025-02-16 comment 0  719

Course Introduction：WebWorkers is a way to implement multi-threading in JavaScript, which avoids page stuttering by moving time-consuming tasks out of the main thread. 1. It is a browser API, which allows scripts to be run in the background thread, without directly operating the DOM, but communicates through postMessage and onmessage; 2. Common types include DedicatedWorker, SharedWorker and ServiceWorker, which are suitable for single page calls, multi-script sharing and network proxy scenarios respectively; 3. When using it, you need to create independent JS files and instantiate them through newWorker(). Data delivery depends on the message mechanism and is restricted by structured cloning; 4. Applicable scenarios include data encryption,

2025-07-04 comment 0  431

Course Introduction：The key to using Vue to REST interface is to have clear structure, easy call, and good handling of errors and loading status. First, the organization API request code should be centrally placed in the /src/api/ directory, and each module corresponds to a JS file for easy maintenance and unified processing, such as using axios.create to configure the basic URL and introduce calls into the components. Secondly, initiate a request in the mounted life cycle hook of the component, and improve the user experience with the loading and error status in data, ensuring that friendly prompts are displayed when loading. Finally, the error code is uniformly processed through the axios interceptor, the timeout time and automatic retry mechanism are set to enhance robustness, and the duplication of error codes are avoided. These steps are implemented in turn

2025-07-11 comment 0  655

Course 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

Course Elementary  13773

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82282

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13145

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24591

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27447

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.