Features of JavaScript:-

              According to a recent survey conducted by Stack Overflow, JavaScript is the most popular language on earth. With advances in browser technology and JavaScript having moved into the server with Node.js and other frameworks, JavaScript is capable of so much more. Here are a few things that we can do with JavaScript:

• JavaScript was created in the first place for DOM manipulation. Earlier websites were mostly static, after Js was created dynamic Web sites were made.
• Functions in JS are objects. They may have properties and methods just like another object. They can be passed as arguments in other functions.
• Can handle date and time.
• Performs Form Validation although the forms are created using HTML.
• No compiler needed.

How does JavaScript work?

          JavaScript is what is known as a client-side script. Most Web applications, such as a search engine, work because of an interaction between the user’s device (e.g. computer, phone or tablet) and a remote server. The software on the remote server sends information to the client (i.e. the user’s machine) and the software on the client side reads the information and renders a Web page on screen.

How to Run JavaScript?

             Being a scripting language, JavaScript cannot run on its own. In fact, the browser is responsible for running JavaScript code. When a user requests an HTML page with JavaScript in it, the script is sent to the browser and it is up to the browser to execute it. The main advantage of JavaScript is that all modern web browsers support JavaScript. So, you do not have to worry about whether your site visitor uses Internet Explorer, Google Chrome, Firefox or any other browser. JavaScript will be supported. Also, JavaScript runs on any operating system including Windows, Linux or Mac. Thus, JavaScript overcomes the main disadvantages of Vb-script (Now deprecated) which is limited to just IE and Windows.