A recap of the course means summarizing the key concepts, topics or ideas covered throughout the course. It is a way of reviewing what has been learned and is particularly helpful when preparing for exams or to refresh one's understanding of the subject.

In a course on JavaScript, a recap would entail revisiting topics such as data types, operators, control structures, functions, arrays, objects, and working with the DOM. It might involve highlighting essential elements of each topic and providing some examples of how they are used in real-world situations.

Furthermore, a recap of the course could also include addressing the syntax and best practices of the programming language as well as the tools used to build web applications. Overall, It helps to consolidate the learning process and reinforce understanding of the material covered in the course, making it easier to apply that knowledge to solve problems encountered in future projects or tasks.