dropdown 关闭没有动画效果

Description

Contributor guide

Tech stack

typescriptreactcss

Domain

frontend

Issue type

bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

ReactCSS animations

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70

Research direction

Investigate the Dropdown component in the antd mobile source code, likely in src/components/dropdown/. Check the open animation implementation (CSS transitions or class toggling) and apply a similar approach for the close action. Look for existing animation classes like 'dropup enter' and 'dropup leave' or equivalent. Ensure the close animation mirrors the open animation but in reverse. Test on a mobile browser.