Write and execute your first 'Hello, World!' program in JavaScript.
Writing your first program is a rite of passage in any programming language. In JavaScript, the 'Hello, World!' program is remarkably simple and can be run in several ways. The most common method for web developers is to run it within a browser's developer console. You can open the console in most browsers (like Chrome or Firefox) by pressing F12 or right-clicking on a webpage and selecting 'Inspect'. In the console tab, you can type JavaScript code directly and see immediate results. The second method involves embedding the JavaScript code within an HTML file using `<script>` tags. You can place the script in the `<head>` or `<body>` section. When you open this HTML file in a browser, the JavaScript code will execute automatically. This is the standard way to include JavaScript on a website. The third method, relevant for backend development, is to use Node.js. After installing Node.js, you can save your JavaScript code in a file (e.g., `hello.js`) and then execute it from your computer's terminal by running the command `node hello.js`. This approach is essential for building servers, command-line tools, and other applications that run outside the context of a web browser. Each method serves a different purpose, but all are fundamental to working with JavaScript.