Why jQuery Usage Declined for React and Vue

For over a decade, jQuery was the undisputed standard for web development, simplifying cross-browser compatibility and DOM manipulation. However, the modern web demands complex, data-driven user interfaces that jQuery was never designed to handle. This article examines the technological and architectural shifts that led to jQuery's decline, specifically focusing on native JavaScript advancements, the rise of declarative programming, component-based architectures, and the demands of modern Single-Page Applications (SPAs) that propelled React and Vue to industry dominance.

The Evolution of Native JavaScript and Web Standards

When jQuery was released in 2006, browser inconsistencies—particularly between Internet Explorer, Firefox, and Safari—were a major pain point for developers. jQuery provided an abstraction layer that normalized these differences with a unified API. Over time, the ECMAScript standards evolved, and modern browsers standardized their APIs. Features like document.querySelector(), classList, and the fetch() API replaced jQuery's core selectors and AJAX utilities. With modern browsers executing standard JavaScript consistently and efficiently, the need for an external helper library to bridge compatibility gaps disappeared.

Imperative vs. Declarative Programming

jQuery relies on an imperative programming paradigm. Developers explicitly write out every step to modify the Document Object Model (DOM) in response to user actions—such as manually finding an element, altering its classes, and updating its inner text. As applications grow in complexity, managing these manual DOM updates leads to tightly coupled code and hard-to-track bugs commonly referred to as "spaghetti code."

In contrast, React and Vue utilize a declarative approach. Developers define the UI as a function of application state. When the state changes, the framework automatically updates the DOM to reflect those changes. This eliminates manual synchronization between data and the UI, significantly reducing bugs and cognitive load.

Component-Based Architecture

Modern user interfaces are constructed using reusable, self-contained components. React and Vue encapsulate markup, logic, and styling into modular units (such as React components or Vue Single-File Components). This modularity allows teams to build, test, and maintain large-scale applications with ease. jQuery operates globally across the DOM, lacking a native concept of components, scoped state, or life-cycle management, making it ill-suited for scalable team-based development.

Performance and the Virtual DOM

Direct DOM manipulation is one of the most computationally expensive operations in browser engines. Because jQuery directly modifies the live DOM, complex interfaces with frequent updates often suffer from layout thrashing and sluggish performance. Modern frameworks optimize this process: React employs a Virtual DOM to calculate the minimal number of mutations required, while Vue utilizes a fine-grained reactivity system to track dependencies and update only the precise nodes that changed.

The Demands of Single-Page Applications

The shift from static, multi-page websites to rich Single-Page Applications required advanced tooling that jQuery could not natively support. Modern applications require robust routing, client-side state management (such as Redux, Zustand, or Pinia), and integrated build tools (like Vite and Webpack). React and Vue were engineered specifically for this modern ecosystem, offering rich ecosystems that support complex client-side architectures, server-side rendering (SSR), and mobile application development.