On February 24, 2026, jQuery celebrated its 20th anniversary with the release of version 4.0, a major overhaul that streamlines the library, adopts ES modules, drops legacy browser support, improves security, and offers a lightweight, migration‑friendly upgrade path for developers.
On January 17, 2026, the jQuery team launched version 4.0.0, a major update that drops legacy IE support, migrates the codebase to ES Modules, adds Trusted Types security, removes deprecated APIs, and sparks a community debate about its relevance in a modern JavaScript ecosystem.
jQuery 4.0.0 introduces modernized code, drops legacy browser support, adds Trusted Types and CSP compatibility, migrates the source to ES modules, removes many deprecated APIs, and provides a slimmer build, all accompanied by detailed upgrade instructions and download links.
This guide explains how to create a real‑time FTP file upload progress bar using a PHP backend and jQuery on the front end, covering the underlying concept, step‑by‑step implementation, code examples, and important considerations for reliable large‑file uploads.
This roundup highlights recent releases and announcements across the web development ecosystem, including jQuery 4.0.0 RC1, Node.js v24.7.0 with enhanced cryptography, Rspack 1.5 performance upgrades, Next.js 15.5 Turbopack beta, plus new articles on ES2025 syntax sugar, Claude Code, Node.js Type Stripping and an AI‑driven quality‑report automation.
jQuery 4.0.0 Release Candidate 1 introduces major updates such as dropping legacy browser support, removing deprecated APIs, adding a slim build without AJAX and animation, and improving event handling and modern browser compatibility, inviting developers to test before the final release.
This article traces the evolution of front‑end development from raw DOM manipulation through jQuery to modern Vue.js, highlighting the philosophical ideas behind Vue’s design, code examples, and the benefits of component‑based, reactive frameworks for building maintainable web applications.
jQuery 4.0.0‑beta.2 introduces a major rewrite of its testing infrastructure, drops legacy IE support, adds full CommonJS and ESM compatibility with proper export handling, removes special Boolean attribute logic, fixes element position calculations in tables, and offers a slimmer build that omits ajax and deferred modules.
Researchers from Harbin Institute of Technology analyzed nearly 14,000 Chinese government websites, uncovering widespread security flaws such as missing DNS records, over‑reliance on a few DNS and ISP providers, vulnerable jQuery versions, and inadequate server redundancy, all of which could enable large‑scale attacks.
GitLab introduces its Duo Chat AI assistant for streamlined development while also previewing the upcoming jQuery 4.0 release and promoting JavaScript "Naked Day," offering developers insights into new tools, security practices, and upcoming web standards.
The jQuery 4.0.0 beta release introduces performance boosts, drops legacy IE support, removes dozens of deprecated APIs, updates event ordering, adds native FormData handling, eliminates automatic JSONP upgrades, and migrates the source to ES modules, with an upgrade guide and migration plugin available.
jQuery’s latest 4.0 beta removes support for IE 10 and older browsers, introduces ES module builds with Rollup, updates FormData handling, and changes event order, while the team signals a full IE drop in the upcoming 5.0, sparking debate over jQuery’s future relevance.
The article reports that jQuery version 4.0.0 is 99% complete according to its GitHub milestone, with only one remaining issue related to ESLint upgrades, and highlights the library’s impact on modern JavaScript development.
jQuery 3.7.0 has been released, featuring the removal of the external Sizzle selector engine, new methods like .uniqueSort(), measurable performance gains for operations such as .append(), additional unit‑less CSS properties, and updated focus event handling in IE, all while slightly reducing library size.
This article presents several front‑end approaches for implementing password‑strength validation—including jQuery plugins, a Vue component, and a CSS3 indicator—each accompanied by live demo links and brief usage explanations to improve user experience during registration.
jQuery 3.6.4 arrives just two months after its predecessor, adding support for the new :has() selector, refining how native CSS.supports determines whether selectors are handled by querySelectorAll or jQuery's engine, and includes various other bug fixes and improvements.
jQuery 3.6.2, released four months after version 3.6.1, introduces compatibility fixes for Chrome’s newly added :has() selector, handling forgiving parsing and complex selector scenarios, while ensuring older versions may still be affected and directing users to the full changelog for additional changes.
In March, the UK government’s GOV.UK site eliminated jQuery from all front‑end applications, detailing the reasons, the removal process, and the resulting performance gains for users, especially on low‑spec devices, through extensive lab testing and real‑user monitoring.
This article explains what front‑end frameworks are, compares the top five options for 2023—including ReactJS, Angular, TezJS, jQuery, and VueJS—detailing their features, advantages, and ideal use cases to help developers select the most suitable technology for their projects.
The jQuery 3.6.1 maintenance update introduces infrastructure improvements, a focus‑related bug fix, significant performance gains for jQuery.trim, and removes outdated links, while also preparing the library for native String#trim support in older browsers.
This article traces jQuery’s meteoric rise during the Web 2.0 era, examines why major sites like GOV.UK, GitHub and Bootstrap have removed it, and explains how HTML5 standardization and modern MVVM frameworks have turned the once‑essential library into a legacy technical debt.
This article traces jQuery’s emergence as the de‑facto library that simplified DOM manipulation and cross‑browser compatibility during the Web 2.0 era, examines its widespread adoption and subsequent performance gains from removal, and explains why modern standards, HTML5 and MVVM frameworks have reduced its relevance today.
This article traces jQuery’s rise as the go‑to library during Web 2.0, examines recent moves by major sites to drop it, explains its original technical advantages, and analyzes how HTML5, MVVM frameworks and modern frontend stacks have reduced its relevance while it still powers a large share of the web.
This article explains why jQuery’s source uses a double assignment pattern, how assignment operators are right‑associative expressions, the impact of operator precedence on property access versus assignment, and demonstrates practical uses such as building linked structures in JavaScript.
This article introduces a jQuery‑style functional programming approach for mini‑program development, compares it with traditional Class components and React Hooks, demonstrates a simple input‑popup component with code examples, and explains how the method simplifies component communication and maintenance.
This tutorial explains how to create a Chrome browser extension that generates QR codes (optionally with protocol headers) and decodes them, covering the background motivation, directory layout, manifest and popup design, core JavaScript logic, installation steps, and a download link for the complete source.
This tutorial shows how to build a Valentine‑themed full‑screen heart animation that falls like snow using HTML, CSS pseudo‑elements, CSS transforms, and the jquery‑snowfall plugin, with complete source code and customization tips.
This article introduces five fun Christmas-themed mini games—including a jQuery lottery page, a cliff‑crossing Santa game, a canvas gift‑catching game, an HTML5 red‑packet game, and a mobile jQuery red‑packet game—each with a brief description and downloadable source code links.
Despite the rise of newer frameworks like React and Next.js, jQuery remains a dominant JavaScript library with a 78% market share, deeply embedded in platforms such as WordPress, and continues to evolve through updates to its core and UI components while facing performance debates.
This article examines jQuery’s historic rise, its deep integration in platforms like WordPress, the reasons it survived the shift to modern frameworks such as React, Angular and Vue, and why it may still be a useful tool despite declining popularity.
The jQuery team announced that the cross‑platform jQuery Mobile project, launched in 2010, is being fully discontinued, urging developers to transition to jQuery UI for continued support and compatibility across browsers and devices.
During the holiday the author introduces Chuncai, an open‑source desktop companion plugin that greets developers, displays messages, and can be customized, then provides the full JavaScript implementation, configuration details, Tuling API integration, and step‑by‑step instructions for embedding it into a web page.
The article discusses the announced shutdown of LayUI, highlights its simple, backend‑friendly design and visual appeal, compares it with modern UI libraries, examines its limitations such as module handling and mobile support, and speculates on the reasons behind its closure.
This article demonstrates how to build an automatic address recognition feature for user input by combining Laravel backend controllers, repository services, and jQuery AJAX calls to parse, validate, and populate name, mobile, and detailed address fields.
This article presents a curated list of free, visually appealing Christmas-themed animation effects built with HTML5, CSS3, and jQuery, each accompanied by a brief description and a download link for the source code.
This tutorial walks through creating a Laravel controller, view, and route to handle Ajax requests, integrating jQuery on the front end, and displaying the server response, providing a practical example for backend developers to implement asynchronous interactions in a PHP application.
This article introduces five distinctive jQuery-powered back‑to‑top animations—including a cartoon character, rocket launcher, starry rocket, floating rocket, and a music‑ding effect—explaining their visual style, providing brief descriptions, and offering download URLs for the source code.
This guide clarifies the differences between native JavaScript and jQuery iteration functions, shows how to convert between DOM and jQuery objects, and provides concrete code examples for each looping method—including for, forEach, every, some, map, filter, for‑in, each, $.map, $.grep, $.inArray and $.filter—so developers can choose the right tool without errors.
Despite the rise of modern frameworks like React, Vue, and Angular, 97.5% of sites still use jQuery, and the newest jQuery release focuses on essential security patches while offering a slimmer build that removes ajax, highlighting the library’s continued stability and relevance for front‑end developers.
jQuery 3.5.0 focuses on security fixes, removes a vulnerable regex from htmlPrefilter, offers a migration plugin to restore the old behavior, and introduces .even() and .odd() methods as replacements for the deprecated positional selectors.
This article explains the concept of cross-origin, why it occurs in modern web architectures, and provides practical Spring‑based solutions using JSONP and CORS together with jQuery AJAX examples, complete with configuration snippets and code samples.
The article explains JavaScript's single‑threaded, event‑loop based asynchronous model, demonstrates how setTimeout’s imprecise timing can cause unexpected behavior in a jQuery Ajax timeout scenario, and offers practical guidance to avoid relying on exact timer scheduling.
This article explains the fundamentals of AJAX, including its definition, the need for asynchronous communication, how form submissions work, the XMLHttpRequest object methods and properties, jQuery implementations, advantages, disadvantages, and typical application and non‑application scenarios, with complete code examples.
This article explains the concept of AJAX, why asynchronous communication is needed, how to submit forms and handle server responses using raw XMLHttpRequest and jQuery, compares GET and POST methods, and outlines the benefits, drawbacks, and suitable scenarios for AJAX in web development.
The article reviews jQuery’s groundbreaking contributions to DOM manipulation, explains why its dominance faded with the rise of MVVM frameworks, and discusses broader tech trends toward higher reusability, cross‑platform support, and separation of business logic from UI code.
This guide shows how to use PHP's cURL functions to post data to a URL and how to submit a form via jQuery Form's ajaxSubmit, including CORS header setup for cross‑origin requests, with complete code examples for both server‑side and client‑side implementations.
This guide explains how to create a Vue‑based comment system, mount it inside a traditional jQuery page, package it as a UMD library with Vue‑CLI 3.0, manage state with Vuex, integrate Element‑UI components, and extend Axios for JSONP support.
Reflecting on jQuery’s rise, dominance, and eventual decline, this article traces the library’s history, its impact on front‑end development, compares it with contemporary frameworks, and offers advice on understanding underlying JavaScript fundamentals before relying on any library.
An insider recounts a mid‑autumn phone interview at a major tech firm, detailing the nervous preparation, the unexpected direct jump to technical questions on JavaScript, cross‑origin issues, event handling, and HTML/CSS, and concludes with the surprising early offer and reflections on the experience.
This article explores JavaScript's various techniques for determining variable types—including typeof, instanceof, constructor, Object.prototype.toString.call, and jQuery's $.type—by explaining their behavior, limitations, and practical examples with common data types.
Learn how to integrate the Select2 jQuery plugin by initializing basic and remote-data selects, configuring AJAX options, handling its eleven events, and leveraging common parameters and methods such as multiple selection, value setting, and enable/disable features for richer UI controls.
A comprehensive front‑end interview guide covering HTML/CSS fundamentals, HTML5 nuances, JavaScript core concepts, Ajax techniques, jQuery usage, and miscellaneous web topics, presented as concise questions and answers to help developers prepare for technical interviews.
This article explains the difference between deep and shallow cloning in JavaScript, illustrates how reference types affect object copies, demonstrates practical implementations using loops, Array.concat, and jQuery.extend, and shows visual examples to help developers avoid common pitfalls when merging objects.
This article presents a universal frontend event tracking (埋点) solution designed for Baidu Takeaway's sales CRM platform, detailing its background, comparison of tracking methods, a declarative approach using Vue directives and MutationObserver mixins, support for legacy jQuery, and practical usage and results.
This article explores how jQuery constructs its $ objects by wrapping a simplified implementation, detailing prototype assignments, the init function, extension mechanisms, and best practices, while providing code snippets and diagrams to help developers deepen their understanding of JavaScript and frontend development.
This article dissects the inner workings of jQuery’s Sizzle selector engine, explaining its tokenization, compilation, matcher generation, and performance optimizations, while offering practical tips for writing faster CSS selectors in modern web development.
This article dissects the Sizzle.js source code, explaining its high performance, design choices such as native API usage, right‑to‑left parsing, tokenization, and modular analysis, while showing how studying its architecture can inform modern frontend framework development.
Learn how to create, customize, and extend jQuery plugins—from basic concepts and simple color-changing examples to chainable calls, avoiding $ symbol conflicts, handling parameters, and using $.extend and $.fn.extend—while understanding the underlying prototype mechanism and best practices.
This article explains how to use the ajaxFileUpload jQuery plugin for asynchronous file uploads, detailing its syntax, configuration options, integration steps with HTML, JavaScript, and Java backend code, and provides practical notes on styling and compatibility.
This article explains how Zone.js, the core Angular 2 component inspired by NodeJS Domain and Dart Zone, can be used to manage execution contexts for both synchronous and asynchronous code, enabling advanced scenarios such as running different jQuery versions side‑by‑side in a single application.
This article explains why errors thrown inside a jQuery 3.0 ready handler are silently ignored, compares the behavior with jQuery 2.x, and shows how to use the new Promise‑based $.ready() API with fail() to surface those errors in the console.
This article explains how to use jQuery’s chaining and .end() method, correctly employ HTML5 data‑* attributes, improve selector performance by caching and preferring native loops, understand the CSS box model and box‑sizing, apply efficient float and absolute positioning techniques, and follow best‑practice CSS formatting and feature detection.
This article dissects jQuery’s source code, revealing its clear modular architecture, closure-based sandbox, innovative no‑new instantiation, extensive method overloads, extend mechanisms, chainable calls with stack tracking, regex optimizations, and conflict‑resolution strategies, offering developers deep insights into its design and performance.
The article walks through a front‑end developer’s step‑by‑step evolution from simple onclick handlers to robust event delegation, data‑action attributes, and a reusable Action library, illustrating pitfalls, best practices, and real‑world integration with jQuery and CMUI.
This article explains the Promise pattern in JavaScript, showing why nested Ajax callbacks hurt readability and user experience, how Promise improves flow with three states, and demonstrates practical usage with a lightweight promise.js library and jQuery Deferred examples.
This article explains how jQuery’s ready method works, why it executes earlier than window.onload, and details the cross‑browser mechanisms—including DOMContentLoaded, document.readyState checks, and the doScroll technique—that ensure code runs as soon as the DOM is ready.
To improve page load speed while fetching additional data via AJAX, developers can choose between parallel and serial requests and handle concurrency using techniques such as sequential execution, callback counting, non‑blocking loops, or jQuery Deferred objects, each with its own trade‑offs.
This article compares AngularJS and jQuery, highlighting AngularJS's framework‑level advantages such as two‑way data binding, powerful built‑in directives, and extensible custom directives that simplify development and improve code readability over jQuery's library approach.
Learn six practical jQuery performance strategies—including appending outside loops, caching array lengths, detaching nodes, checking for empty selections, optimizing selectors, and using stylesheet rules—to dramatically reduce DOM manipulation costs and accelerate page rendering.
This article compares jQuery and Zepto by running a 10,000‑iteration DOM selection benchmark, showing that jQuery consistently outperforms Zepto by roughly half the execution time, and discusses the trade‑offs between library size and speed for mobile web development.
This article compares two jQuery event‑binding methods—direct .click() and delegated .delegate()—by generating ten thousand list items, measuring execution times, and showing that delegation reduces binding time from about 104 ms to just 2 ms, demonstrating a significant performance advantage.
This guide showcases a curated collection of lightweight jQuery plugins—covering layout, animation, media, sliders, typography, and utility features—each described with its core functionality and visual example to help developers enhance website interactivity and design efficiently.
