Complete JavaScript ES6+ Programming Textbook

⚡ JavaScript Course Table of Contents

1. Scope, Hoisting & Variables 2. Array Higher-Order Methods 3. DOM Manipulation & Event Handling 4. Promises & Async/Await 5. Fetch API & HTTP Network Calls 6. Student Coding Lab Exercises

2. ES6+ Array Methods (Map, Filter, Reduce)

JavaScript Methods

const courses = [
  { id: 1, name: 'C Language', fee: 2500 },
  { id: 2, name: 'Core Java', fee: 4000 },
  { id: 3, name: 'Python', fee: 3500 }
];

// Filter courses > 3000 & Map names
const premiumNames = courses
  .filter(c => c.fee > 3000)
  .map(c => c.name.toUpperCase());

console.log('Premium Courses:', premiumNames);

4. Promises & Async/Await Pattern

Async/Await Pattern

const fetchStudentData = async (studentId) => {
  try {
    const response = await fetch(`https://telugututorial.in/api/student/${studentId}`);
    if (!response.ok) throw new Error('Student record not found');
    
    const data = await response.json();
    console.log('Loaded Profile:', data);
  } catch (err) {
    console.error('Fetch Failed:', err.message);
  }
};

📝 JavaScript Student Coding Exercises

Write a function using reduce() to sum numbers in an array.
Create an interactive accordion using event delegation on a parent container.

JavaScript ES6+ Complete Course Manual

2. ES6+ Array Methods (Map, Filter, Reduce)

4. Promises & Async/Await Pattern