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The HTML document is the primary resource that describes the structure and content of a web page.
A complete web document is assembled from multiple resources requested by the browser through HTTP. The browser first fetches the main HTML document, then parses it and sends additional requests for stylesheets that control layout, scripts that provide behavior, images, videos, and other embedded content. These separate resources are combined by the browser to display the final web page. Scripts can request further resources after the initial page loads, allowing the browser to update the document dynamically. HTTP supports retrieving these resources from servers, proxies, caches, or multiple server components, while features such as caching, authentication, cookies, and cross-origin controls help manage how resources are delivered and used.
The HTML document is the primary resource that describes the structure and content of a web page.
Browsers make additional HTTP requests for CSS, JavaScript, images, videos, and other sub-resources.
The browser parses and combines all retrieved resources to present the complete web document.
Scripts can fetch additional resources later and update the page dynamically.
Servers, proxies, and caches can generate, relay, store, or control access to web resources.
The main resource that defines the structure and content of a web page.
Layout and presentation instructions that control how an HTML document is displayed.
Executable code, usually JavaScript, that adds behavior and can request or update resources.
An additional resource embedded in or required by a web document, such as an image, video, stylesheet, or script.
A client application, usually a web browser, that requests resources and presents them to the user.
A message sent by a client to ask a server or proxy for a resource or other operation.
A message from a server containing the result of a request and, when appropriate, the requested resource.
Stored copies of resources that can be reused to reduce request time and network traffic.
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