Tech Insights

Virtual DOM

Last updated May 17, 2025, generated by Sumble

What is Virtual DOM?

The Virtual DOM (VDOM) is a programming concept where a virtual representation of a UI is kept in memory and synced with the real DOM. It's used in JavaScript frameworks like React, Vue.js, and others to improve performance by minimizing direct manipulations to the actual DOM. When changes occur, the VDOM is updated first, and then a 'diffing' algorithm efficiently calculates the minimal set of changes needed to update the real DOM, leading to faster and more efficient UI updates.

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What other technologies are related to Virtual DOM?

Virtual DOM Competitor Technologies

DOM manipulation

Virtual DOM abstracts away direct DOM manipulation by providing an intermediate representation, reducing the need for developers to interact directly with the DOM. Libraries that manipulate the DOM directly compete with this abstraction.

mentioned alongside Virtual DOM in 5% (62) of relevant job posts

Virtual DOM Complementary Technologies

component lifecycle

Virtual DOM implementations like React rely on component lifecycle methods to manage updates and rendering efficiently.

mentioned alongside Virtual DOM in 61% (119) of relevant job posts

JSX

JSX is a syntax extension to JavaScript that allows you to write HTML-like code, which is often used with Virtual DOM implementations for declarative UI development.

mentioned alongside Virtual DOM in 14% (476) of relevant job posts

component state

Virtual DOM implementations often rely on component state to determine when and how to update the UI efficiently.

mentioned alongside Virtual DOM in 96% (64) of relevant job posts