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The document.body property is part of the Web's Document Object Model (DOM) and provides access to the body element of the current document. It returns the HTMLBodyElement that corresponds to the <body> tag and is defined by the standard Document interface, with broad support across modern browsers.
Usage of document.body includes reading and modifying the body element and its content. Developers can access
Limitations and behavior: document.body is effectively a read-only property in typical usage, meaning you cannot reassign
Considerations for scripting timing: to reliably interact with the body, run code after the document is ready
In summary, document.body is the primary programmatic handle to the document's body element, enabling dynamic page