JavaScript adds interactivity and logic to web pages. It allows developers to create dynamic features like dropdown menus, sliders, form validation, and content updates without reloading the page. JavaScript runs directly in the browser and can manipulate HTML and CSS through the Document Object Model (DOM). Beginners start with understanding variables, data types, functions, conditionals, loops, and events. JavaScript also interacts with APIs to fetch and display data from servers using fetch() or older methods like AJAX. Learning DOM manipulation helps developers dynamically change the structure and content of web pages based on user actions. JavaScript is a core technology in frontend development and is also used on the backend with environments like Node.js. It is vital for any web developer who wants to build interactive, engaging, and real-time web experiences.
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