Uncodemy Web Development Course Syllabus Explained

<!-- responsive_card.html — Week 1–2 output
     The kind of layout students build in the HTML + CSS module.
     Focus: semantic HTML, flexbox, and a responsive grid. -->

<section class="features">
  <article class="feature-card">
    <h2>Fast setup</h2>
    <p>Get started in minutes with a single command.</p>
  </article>
  <article class="feature-card">
    <h2>Responsive by default</h2>
    <p>Layouts adapt cleanly from mobile to desktop.</p>
  </article>
  <article class="feature-card">
    <h2>Accessible</h2>
    <p>Semantic markup and keyboard-friendly components.</p>
  </article>
</section>

<style>
  .features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    padding: 1rem;
  }

  .feature-card {
    padding: 1.5rem;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
  }

  .feature-card h2 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
  }

  .feature-card p {
    margin: 0;
    color: #4b5563;
    line-height: 1.5;
  }

  @media (max-width: 480px) {
    .features { gap: 0.75rem; }
    .feature-card { padding: 1rem; }
  }
</style>

<!-- What students learn here:
     - Semantic HTML structure
     - CSS Grid with auto-fit for responsiveness
     - The mobile-first mindset
     - Why layout matters before styling matters -->

// fetch_weather.js — Week 5–6 output
// The kind of async exercise students complete in the advanced JavaScript module.
// Focus: fetch, async/await, error handling, and rendering to the DOM.

const form = document.querySelector("#city-form");
const output = document.querySelector("#weather-output");

async function fetchWeather(city) {
  // Step 1: turn the city name into coordinates (geocoding API)
  const geoUrl = `https://geocoding-api.open-meteo.com/v1/search?name=${encodeURIComponent(city)}&count=1`;
  const geoRes = await fetch(geoUrl);
  if (!geoRes.ok) {
    throw new Error(`Geocoding failed with status ${geoRes.status}`);
  }

  const geo = await geoRes.json();
  if (!geo.results || geo.results.length === 0) {
    throw new Error("City not found");
  }

  // Step 2: fetch the weather for those coordinates
  const { latitude, longitude } = geo.results[0];
  const url = `https://api.open-meteo.com/v1/forecast?latitude=${latitude}&longitude=${longitude}&current_weather=true`;

  const response = await fetch(url);

  if (!response.ok) {
    throw new Error(`Request failed with status ${response.status}`);
  }

  return response.json();
}

form.addEventListener("submit", async (event) => {
  event.preventDefault();

  const city = new FormData(form).get("city").trim();
  if (!city) return;
  output.textContent = "Loading...";

  try {
    const data = await fetchWeather(city);
    output.textContent = `Temperature in ${city}: ${data.current_weather.temperature}°C`;
  } catch (error) {
    output.textContent = "Could not load weather. Try again.";
    console.error(error);
  }
});

// What students learn here:
// - How fetch and async/await work together
// - Chaining two API calls (geocoding, then weather)
// - Why response.ok matters before calling .json()
// - How to handle loading and error states in the UI
// - How to attach a real API to a real form

// SearchBar.jsx — Week 7–8 output
// A React component with hooks, controlled input, and a callback prop.
// Focus: useState, useEffect, and lifting state up.

import { useEffect, useState } from "react";

// Note: the parent should pass a stable onSearch (wrap it in useCallback),
// otherwise the effect below re-runs on every parent render.
export default function SearchBar({ onSearch }) {
  const [query, setQuery] = useState("");
  const [debounced, setDebounced] = useState("");

  // Debounce the query so we don't fire a request on every keystroke
  useEffect(() => {
    const timer = setTimeout(() => setDebounced(query), 300);
    return () => clearTimeout(timer);
  }, [query]);

  // Notify the parent when the debounced value changes
  useEffect(() => {
    onSearch(debounced);
  }, [debounced, onSearch]);

  return (
    <form
      onSubmit={(e) => {
        e.preventDefault();
        onSearch(query);
      }}
    >
      <input
        type="search"
        value={query}
        onChange={(e) => setQuery(e.target.value)}
        placeholder="Search products"
        aria-label="Search products"
      />
      <button type="submit">Search</button>
    </form>
  );
}

// What students learn here:
// - Controlled inputs in React
// - The useEffect cleanup pattern
// - Debouncing as a performance technique
// - Why state should be lifted when siblings need it