App Review: Wikipedia JSON Viewer

Submitted by: Huiying Zhan | Course: TECHIE5356 | Date: April 25, 2026

Loaded SRC_URL

https://PRODUCINGTECHNOLOGY.COM/65-APPS/ZHANGWENZHUO_182375_15200620_WENZHOU_ZHANG_JSON_APP.HTML

Summary of App Behavior

Wikipedia JSON Viewer is a simple web app designed to fetch and display a Wikipedia-related JSON file in the browser. The interface consists of three elements:

A text input field pre-populated with a JSON URL: https://producingtechnology.com/a1/15-json/wenzhouzhang.json
A "Load JSON" button intended to fetch the JSON from the provided URL and display its contents
A results area below the button where the JSON output is presumably meant to appear

The app is set against a dark navy background and appears to be a minimal utility tool for loading and viewing structured Wikipedia JSON data directly in the browser without needing a separate JSON viewer tool.

Things That Didn't Work as Expected

The "Load JSON" button is completely non-functional. Clicking it produces no response — no network request, no loading indicator, no error message, and no output in the results area. The core feature of the app does not work.
The results area remains blank at all times. There is no feedback indicating whether the app is attempting to fetch data or has silently failed.
There is no error handling or user feedback of any kind. A broken fetch should at minimum display an error message (e.g., "Failed to load JSON" or "Invalid URL").
The URL input field appears editable, but since the button does nothing, entering a different URL also has no effect — making the input field equally non-functional.
The app provides no fallback content or placeholder to show what a successful JSON result would look like, leaving users with no indication of the intended behavior.
The overall layout is mostly empty, with the single card widget floating in a large dark void, giving the impression the page may not have fully loaded.

Prompt to Improve the App

Fix the Wikipedia JSON Viewer so the "Load JSON" button actually fetches the JSON from the URL in the input field using the Fetch API, and renders the parsed result in a formatted, collapsible tree view below the button. Add a loading spinner while the request is in progress. Display a clear error message if the fetch fails (e.g., invalid URL, network error, or non-JSON response). Support editing the URL input to load any valid JSON endpoint, not just the pre-filled one. Add syntax highlighting to the JSON output to distinguish keys, strings, numbers, and booleans. Include a "Copy JSON" button that copies the raw response to the clipboard. Optionally, if the JSON follows a known Wikipedia API structure, render a human-readable summary (title, extract, thumbnail) above the raw JSON tree.