teach me Javascript and how the internet work and ofcourse the new agentic web

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JavaScript is the programming language that makes websites interactive and dynamic. While HTML structures the content and CSS styles it, JavaScript adds behavior. It primarily runs in your web browser on the client side, but it can also run on servers using environments like Node.js. JavaScript allows developers to manipulate webpage content, handle user interactions like clicks and form submissions, fetch data from servers without reloading the page, create animations, and build complex web applications. When you click a button on a website, JavaScript code is what responds to that interaction, making the web experience dynamic rather than static. The internet is a vast network of interconnected computers that communicate with each other. It operates on a client-server model. Your device, like a computer or phone, is the client that requests information. Servers are powerful computers that store and send that information. When you type a website address like google.com, your computer needs to find the server's numerical IP address. It asks a DNS server, which acts like a phone book, translating the human-readable name into an IP address. Your browser then sends a request to that IP address using the HTTP protocol. The request travels across the network in small pieces called packets. The server receives the request, finds the requested web page, and sends it back to your browser, also in packets. Your browser then reassembles these packets and renders the web page for you to see and interact with.