Add loading, empty, and error states when loading data in js via api

描述

貢獻者指南

技術棧

javascript

領域

frontend

議題類型

feature

難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。

3

預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。

1-3 hours

活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。

stale

清晰度議題是否清楚說明預期改動、驗收標準和下一步。

clear

前置要求

Basic JavaScriptReact

新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。

60

研究方向

This issue requests adding loading, empty, and error states for data fetched via API. The repository is a UI for Consul and Nomad built with JavaScript (likely React). Since no implementation details are provided, start by examining existing API calls (e.g., in action creators or service layers) to understand the data flow. Add conditional rendering in components to show spinner, empty message, or error message based on state. Refer to similar state management patterns in the codebase.