JavaScript Interview Questions

JavaScript is a versatile programming language primarily used for creating interactive and dynamic content on the web. Initially developed by Netscape in the mid-1990s, JavaScript has evolved into a powerful language that can be run in the browser or on the server-side using environments like Node.js. JavaScript allows developers to create web pages with rich, interactive experiences. For example, it can be used to validate form inputs, create animations, handle user events, and communicate with servers asynchronously.

Here is a simple example of JavaScript code that prints 'Hello, world!' to the console:

console.log('Hello, world!');

This code demonstrates the basic syntax and use of JavaScript to output text to the browser's console.