<!DOCTYPE html>
<html>
<head>
<title>Webpage Title</title>
</head>
<body>
<h1>Main Heading</h1>
<p>A paragraph text.</p>
</body>
</html>Learn to style web pages.
body {
background-color: #FFF;
font-size: 16px;
}
h1 {
font-size: 2rem;
}
p {
font-family: Verdana,sans-serif;
}Learn to build interactive web pages.
<button onclick="demoFunc()">Click Me!</button>
<script>
function demoFunc() {
let p = document.getElementById("p");
p.textContent = "You changed this text!";
p.style.fontSize = "20px";
p.style.color = "blue";
}
</script>Learn to build fast and scalable server-side applications with Node.js.
const express = require('express');
const app = express();
app.get('/', (req, res) => {
res.send('Hello Express.js!');
});
app.listen(3000, () => {
console.log('Server running on port 3000');
});
Learn to build dynamic web content.
<?php
echo "Hello, I'm a PHP script!";
function demoFunc()
{
echo "It works.";
echo "Today's date is " . date('Y-m-d');
echo "Have a great day!";
}
demoFunc();
?>Learn to manage and manipulate relational and NoSQL databases efficiently.
-- Retrieve active users
SELECT userID,
CONCAT(firstName, ' ', lastName) AS name,
email,
registrationDate
FROM users
WHERE status = 1;
-- End of query
-- Output: userID, name, email, registrationDateLearn to develop diverse software with simplicity and readability.
def greet():
return '''Welcome to Python!
It's easy to learn.'''
message = greet()
print(message)Learn to create cross-platform applications and enterprise software.
public class Greet {
static String greet() {
return "Welcome to Java!";
}
public static void main(String[] args) {
System.out.println(greet());
System.out.println("It's easy to learn.");
}
}<%@ page contentType="text/html; charset=UTF-8"%>
<html>
<head>
<title>Quick JSP Demo</title>
</head>
<body>
<p>Hello, I'm a JSP script!</p>
<% out.println("Today's date is " + new java.util.Date()); %>
</body>
</html>Learn to create systems software and understand low-level computing.
#include<stdio.h>
int main()
{
printf("First C Program.\n");
return 0;
}Learn to create systems software with object-oriented capabilities.
#include <iostream>
int main()
{
std::cout<<"First C++ Program.";
std::cout<<std::endl<<"Its easy to learn.";
}Learn to structure and exchange data efficiently with JSON and XML.
{
"user": {
"name": "User name",
"active": true
}
<user>
<name>User name</name>
<active>true</active>
</user>
Learn CSS anchor positioning with named anchors, position-area, anchor functions, sizing, fallbacks, and a complete responsive example.
Learn Java pattern matching for switch with type patterns, guards, null handling, dominance, sealed classes, records, and exhaustiveness.
Learn Python asyncio TaskGroup for structured concurrency, task results, cancellation, exception groups, nested tasks, timeouts, and cleanup.
Learn MySQL window functions with OVER, PARTITION BY, ordering, frames, ranking, running totals, LAG, LEAD, and named windows.
Learn JavaScript Intl.Segmenter to split Unicode text into locale-aware graphemes, words, and sentences with practical multilingual examples.
Learn the HTML Popover API with declarative controls, JavaScript methods, light dismissal, events, styling, and accessibility guidance.
Learn Java records, generated members, validation, value equality, defensive copies, interfaces, generic records, and record patterns.
Learn C# LINQ method and query syntax, filtering, projection, grouping, joins, deferred execution, and provider behavior.
Learn Python dataclasses, generated methods, default factories, validation, frozen and slotted instances, conversion, inheritance, and common mistakes.
Learn JavaScript structuredClone() for deep copies, built-in types, circular references, transferable buffers, and DataCloneError handling.
Learn Python decorators, wrappers, arguments, metadata preservation, stacking, methods, async functions, and common mistakes with practical examples.
Learn CSS Grid Layout with responsive columns, named areas, alignment, implicit tracks, subgrid, and practical examples.
Learn Git rebase, resolve conflicts, clean commits interactively, push rewritten branches safely, and recover work with reflog.
Learn MySQL indexes, composite key order, covering and invisible indexes, and how to verify query performance with EXPLAIN.
Learn JavaScript Intersection Observer for lazy loading, reveal effects, infinite scrolling, active navigation, thresholds, and cleanup.
Learn Java virtual threads to scale blocking I/O workloads, manage tasks, handle interruption, limit resources, and avoid pinning issues.
Learn Python context managers to manage resources safely with with, contextlib, ExitStack, and synchronous or asynchronous cleanup.
Learn CSS cascade layers to control stylesheet priority, organize components, isolate vendor CSS, and reduce specificity conflicts.
Learn MySQL common table expressions to organize complex queries, traverse hierarchies, control recursion, and inspect execution plans.