Introduction to JavaScript

Learn JavaScript to create dynamic web pages and manipulate the DOM.

JavaScript is a versatile, high-level, and interpreted programming language designed for the web. It allows us to create dynamic, interactive content on web pages, such as animations, form validations, and interactive menus. JavaScript works seamlessly with HTML and CSS, enabling us to build rich user interfaces and enhance the user experience.

What is JavaScript?

JavaScript is a client-side programming language that runs directly in the browser. While it is traditionally associated with the client side, modern technologies like Node.js have also introduced JavaScript as a server-side language. Its ability to manipulate the Document Object Model (DOM) makes it indispensable for modern web development.

Here’s why we use JavaScript:

  • Dynamic content: It can update HTML and CSS without reloading the page.

  • Interactivity: It supports event handling, animations, and user interaction.

  • Versatility: It is compatible with multiple libraries and frameworks like React and Angular.

Syntax overview

JavaScript has a simple syntax that we can learn quickly. Here’s an example to demonstrate the basics:

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