Mastering JavaScript Variables – VAR, LET & CONST in 2025

Updated in May 2025. This course now features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course. This course is designed to provide in-depth knowledge of JavaScript variable declarations, focusing on the differences between VAR, LET, and CONST. By the end of this course, learners will have a clear understanding of how these declarations affect variable scope, execution contexts, and best practices in modern JavaScript development. This kno…