JavaScript is a programming language that is commonly used to create interactive effects within web browsers. It is a client-side scripting language, which means that it runs on the user’s device (e.g. computer, phone, etc.) rather than on a server. Some key features of JavaScript include:
- Dynamic interactivity: JavaScript allows developers to create interactive and dynamic web pages, which can respond to user input and change in real-time.
- Validation: JavaScript can be used to validate user input on forms to ensure that it is in the correct format before it is submitted.
- Asynchrony: JavaScript allows developers to create asynchronous web applications, which can communicate with a server in the background without the need to reload the page.
- DOM manipulation: JavaScript can be used to manipulate the Document Object Model (DOM), which represents the structure of a web page and allows developers to change the content, layout, and appearance of a page.
- Server communication: JavaScript can be used to send and receive data from a server using techniques such as AJAX (Asynchronous JavaScript and XML), which allows developers to build web applications that can communicate with a server asynchronously.
- Cross-platform compatibility: JavaScript is supported by a wide range of devices and browsers, which makes it a popular choice for building web applications that need to work across different platforms.