What are features of Javascript? Input validation : Javascript allows you to validate user input before sending it to server for backend operations. Control over browser : Javascript gives more control over browser due to which you can change the background colour of this page as well as the text on the browser's status bar. Detect browser and OS : Javascript enables you to detect user’s browser and OS due to which you can perform platform dependant operations. Handling date and time : Javascript enables you to write code based users date and time, it also enables you to capture users date and time as user and server may be in different time zone. Generating HTML on fly : Javascript enables you to dynamically generate HTML. What are advantages of Javascript? Faster speed : JavaScript is fast because it run immediately within the client-side browser. Javascript is not dependant on network unless backend data is required to be processed. Need to compile Javascript on the clien