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Variables and datatypes in JavaScript, in this course introduces learners to one of the core foundations of programming in JavaScript. You’ll explore how to create and manipulate variables, understand the difference between let, const, and var, and learn best practices for naming and using variables effectively. The course explains the major data types — strings, numbers, booleans, null, undefined, objects, and arrays — and how JavaScript handles dynamic typing. Through practical examples, you’ll practice converting data types, checking types, and avoiding common pitfalls such as implicit type coercion. By the end of the course, you’ll be able to confidently store, process, and manage data within your programs, paving the way for mastering more complex concepts like functions, control flow, and DOM manipulation. This course is ideal for beginners seeking a solid understanding of JavaScript’s building blocks. ProgrammingKnowledge