HTML, CSS, and JavaScript are three different languages that are used in developing websites and are professionals who want to get skilled in front-end or full-stack. HTML is a Markup language, an acronym for HyperText Markup Language that gives the structure to the website. While CSS is a styling language that is used in website development to give style and a customized look. Whereas, JavaScript is one of the client-side programming languages that could be used for creating dynamic content that could be used to enhance user-friendliness and interactivity.
All these three languages are different and function differently, to learn JavaScript, I would suggest you learn HTML and CSS initially, that would help you in understanding JavaScript better. If you wish to get trained and skilled in these languages to become a full-fledged web developer, I would recommend you to enroll in the Full Stack Developer course from Intellipaat, which would offer you dedicated time for instructor-led training and projects for you to practice and enhance your practical skills. Also, watch our YouTube video on the Difference Between HTML and JavaScript to get going.