UseState - Exercises
The article discusses various exercises using the React useState hook for beginners. It includes examples such as a toggle button, input field, character counter, and dependent dropdown. Each example demonstrates how to manage state in functional components effectively.
- ▪The Toggle component allows users to switch between an on and off state using images.
- ▪The Input component greets users by name as they type into a text field.
- ▪The Dependent component showcases how to create dropdowns that change based on previous selections.
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| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/sivakumar_mathiyalagan_/usestate-exercises-3ekc |
| Publication time | Thu, 21 May 2026 08:41:07 +0000 |
| Retrieval time | 2026-05-21T08:51:10.385Z |
| Last seen | 2026-05-21T08:51:10.385Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | None |
| Cluster logic | Not yet clustered, or no peer story found in the clustering window. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3795010) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Sivakumar Mathiyalagan Posted on May 21 UseState - Exercises #beginners #javascript #react #tutorial *Toggle Button * import { useState } from "react"; function Toggle(){ const [bulb,setBulb] = useState("https://www.w3schools.com/js/pic_bulboff.gif") // const [flag,setFlag] = useState(false); function toggle(){ if (bulb === "https://www.w3schools.com/js/pic_bulboff.gif"){ setBulb("https://www.w3schools.com/js/pic_bulbon.gif") // setFlag(true); } else{…
Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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