Glossary coding Term Page

Partial Update

Swap or patch the specific UI fragment that reflects new state.

partial-update #ui#javascript

Korean version

Aliases

targeted updateselective render

Prerequisites

Render Function

Related Concepts

Render Function DocumentFragment Error State

Core Idea

A partial update inspects the state diff, finds the DOM node that represents the changed entity, and replaces only that slice. It keeps the rest of the tree untouched, reducing layout work and preserving local state when needed.

Why It Matters Here

Mathbong teaches partial updates alongside render functions so UI helpers can scale from prototypes to dashboards. Combining them with fragments or observers shows how performance and clarity go hand in hand.

Posts Mentioning This Concept

[JavaScript 시리즈 14편] 재사용 가능한 UI 패턴과 렌더 함수 설계 반복되는 DOM 조작을 줄이는 렌더 함수, 상태-뷰 분리, 패턴 카탈로그 작성을 다룹니다.[JavaScript Series 14] Design reusable UI patterns and render functions Cut repeated DOM work by creating render helpers, keeping your data separate from how it looks, and organizing common UI patterns.