Master modern JavaScript fundamentals in this comprehensive 7-hour course. Begin with the basics of variables and data types, then progress through data structures, control flow, and functions. Explore essential built-in APIs for data manipulation, AJAX, and DOM interaction. Dive into advanced topics like classes, promises, arrow functions, and generators. Learn to work with strings, numbers, arrays, and objects effectively. Gain proficiency in asynchronous programming, web APIs, and ES modules. By the end, you'll have a solid foundation in JavaScript, from core concepts to the latest language features, preparing you for web development and beyond.