JavaScript continues to dominate web development with new features in ES6 and beyond. Modern JavaScript includes arrow functions, destructuring, template literals, async/await, and modules that simplify code and improve readability. Understanding these features allows developers to write clean, efficient, and maintainable code. JavaScript frameworks like React, Vue, and Node.js rely heavily on these features, making them essential skills for front-end and full-stack development. Keeping up with JavaScript updates ensures developers can build modern, high-performance web applications.