- Functions
- Objects
- Array Properties and Methods
- DOM
- Built-in Objects
- Using Events in JavaScript
- Handling Input and Output
- Ajax and JSON
JavaScript is a powerful programming language that allows you to add interactivity and dynamic behavior to web pages. It has a wide range of features and functionalities that can be divided into several categories:
- Functions: JavaScript functions allow you to encapsulate a set of instructions that can be reused throughout your code.
- Objects: JavaScript is an object-oriented language, which means you can create and manipulate objects to represent real-world entities.
- Array Properties and Methods: Arrays in JavaScript are used to store multiple values in a single variable. They come with a variety of built-in properties and methods to manipulate and retrieve data.
- DOM (Document Object Model): The DOM is a programming interface that represents the structure of an HTML or XML document. JavaScript can be used to access and modify the elements and content of a web page.
- Built-in Objects: JavaScript provides a set of built-in objects that offer additional functionality. Some commonly used built-in objects include Date, Math, String, and Array.
- Using Events in JavaScript: Events are actions that can be triggered by the user or the browser. JavaScript allows you to handle events and perform certain actions in response to them.
- Handling Input and Output: JavaScript can be used to interact with user input and display output on the web page. You can access form fields, validate user input, and dynamically update the content of the page.
- Ajax and JSON: Ajax (Asynchronous JavaScript and XML) is a technique that allows you to send and receive data from a server asynchronously, without disrupting the user experience. JSON (JavaScript Object Notation) is a lightweight data format commonly used for transmitting data between a server and a web application.
By understanding these basic concepts and learning how to use them effectively, you can start building dynamic and interactive web applications with JavaScript.