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This document provides an introduction to JavaScript and its uses. It explains that JavaScript is an interpreted language like Python, and is used to manipulate HTML documents and respond to user interactions by changing elements and styles on web pages. The DOM is introduced as the tree structure representation of HTML, and JavaScript is said to be able to query and modify this tree. Common JavaScript tasks are then listed, such as handling events, validating and updating client-side data, and making requests to servers.






































