// Welcome to the Matrix function main() { console.log("Initializing system..."); let x = 10; let y = 20; let z = x + y; console.log(`Calculated value: ${z}`); // Simulate a data processing function function processData(data) { console.log("Processing data..."); let result = data.map(item => item * 2); return result; } // Simulate an API call to fetch data const api = 'https://api.example.com/data'; let fetchedData = []; fetch(api) .then(response => response.json()) .then(data => { console.log("Data fetched successfully!"); fetchedData = data; let processedData = processData(fetchedData); console.log("Data processed:", processedData); }) .catch(error => { console.error("Error fetching data:", error); }); // Simulate a loop with some logic for (let i = 0; i < 10; i++) { console.log(`Iteration ${i + 1}`); if (i % 2 === 0) { console.log(`${i} is even.`); } else { console.log(`${i} is odd.`); } } // Simulate a class for user management class User { constructor(name, age) { this.name = name; this.age = age; } greet() { console.log(`Hello, my name is ${this.name} and I am ${this.age} years old.`); } isAdult() { return this.age >= 18; } } // Create some users const user1 = new User("Alice", 25); const user2 = new User("Bob", 16); user1.greet(); user2.greet(); console.log(`Is ${user1.name} an adult?`, user1.isAdult()); console.log(`Is ${user2.name} an adult?`, user2.isAdult()); // Simulate a complex calculation function calculateComplexValue(input) { let result = 0; for (let i = 0; i < input; i++) { result += Math.sqrt(i) * Math.pow(2, i); } return result; } console.log("Calculating complex value..."); let complexValue = calculateComplexValue(5); console.log("Complex value calculated:", complexValue); // Simulate a timeout for delayed execution setTimeout(() => { console.log("Delayed execution after 3 seconds."); }, 3000); // Simulate a promise chain function asyncTask() { return new Promise((resolve, reject) => { setTimeout(() => { resolve("Async task completed!"); }, 2000); }); } asyncTask() .then(result => { console.log(result); }) .catch(error => { console.error("Error in async task:", error); }); // Simulate a large dataset const largeDataset = Array.from({ length: 100 }, (_, index) => ({ id: index + 1, value: Math.random() * 100, })); console.log("Large dataset generated:", largeDataset.slice(0, 5)); // Show first 5 entries // Simulate a search function function searchDataset(dataset, query) { return dataset.filter(item => item.value > query); } let searchResults = searchDataset(largeDataset, 50); console.log("Search results (values > 50):", searchResults); // Simulate a recursive function function factorial(n) { if (n === 0 || n === 1) return 1; return n * factorial(n - 1); } console.log("Calculating factorial of 5..."); console.log("Factorial result:", factorial(5)); // Simulate an event listener document.addEventListener("click", () => { console.log("Document clicked!"); }); // Simulate a utility function function formatDate(date) { return new Intl.DateTimeFormat("en-US", { year: "numeric", month: "long", day: "numeric", }).format(date); } console.log("Formatted date:", formatDate(new Date())); // Simulate a module pattern const utils = (function () { function privateMethod() { console.log("This is a private method."); } return { publicMethod: function () { console.log("This is a public method."); privateMethod(); }, }; })(); utils.publicMethod(); } // Run the main function main();