JavaScript is an actual programming language, whereas jQuery is a library that allows you to use JavaScript without having to write all of it yourself—which saves time! As a frontend developer, you’ll be responsible for building the user interface (UI), which is what people see when they visit your site. You’ll collaborate with designers to create wireframes and mockups that will eventually be turned into working codeIt's like having a personal assistant who can write code for you. The library is written in JavaScript, so it will work with any programming language that uses that language.