Use cases of JavaScript T he internet is a global network of interconnected computers which can send and receive data to other computers. You can request for a resource, and a computer will give it to you. For example, when you visit the URL, the HTML page will be served. Early days people used the internet for advertising their companies, with websites built using only HTML and CSS . Not a great one, but it did the job. But as time goes, people needed websites to be more attractive and interactive. So, some developers in Netscape (If you haven’t heard about it, it’s a big deal in the olden days) decided to write a language to manipulate the HTML elements in the browser. Thus, born JavaScript. Please understand JavaScript and Java are not related. It’s just named in that way for marketing the language. I hope this section gave you an idea of what requirement or need led to the creation of JavaScript. Simply to put, JavaScript is a programming language for the web which can be used...