JavaScript is mostly used as a client-side scripting language. With Client-side JavaScript, we are able to interpreter with the Document Object Model (DOM) of a web browser. On Client-Side, JavaScript add interactive features to your page. JavaScript allowing us to do plenty of tasks on Client-Side like mathematical calculations, form validation, drop down and sliding menus, message tickers, work with events, work with cookies, add special effects and animation, develop interactive games, customize graphics selections, and create security passwords and many more.