\n\n\n\n

The DOM for this document might look like this:
\n<\/p>\n\n

Document\n ├── html\n     ├── head\n     │    └── title\n     └── body\n          └── div#content\n               ├── h1\n               └── p\n<\/pre>\n\n\n\n
\n  \n  \n  How JavaScript Uses the DOM:\n<\/h3>\n\n
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\nAccessing Elements<\/strong>: JavaScript can select and access elements from the DOM using methods like document.getElementById() or document.querySelector().\n<\/li>\n<\/ol>\n\n
   let heading = document.getElementById(\"content\");\n<\/pre>\n\n\n\n
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\nManipulating Elements<\/strong>: JavaScript can modify the content, attributes, or style of elements.\n<\/li>\n<\/ol>\n\n
   heading.innerHTML = \"New Content\";\n   heading.style.color = \"red\";\n<\/pre>\n\n\n\n
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\nEvent Handling<\/strong>: JavaScript can attach event listeners to DOM elements to respond to user actions like clicks, key presses, etc.\n<\/li>\n<\/ol>\n\n
   document.getElementById(\"myButton\").addEventListener(\"click\", function() {\n     alert(\"Button clicked!\");\n   });\n<\/pre>\n\n\n\n
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\nCreating and Removing Elements<\/strong>: JavaScript can dynamically create new elements or remove existing ones.\n<\/li>\n<\/ol>\n\n
   const newElement = document.createElement(\"div\");\n   document.body.appendChild(newElement);\n<\/pre>\n\n\n\n
\n  \n  \n  Why the DOM is Important:\n<\/h3>\n\n<\/pre>\n
\n
It provides a way for JavaScript to interact with and manipulate the structure and content of a webpage.<\/li>\n
It allows for dynamic, interactive web pages without requiring a page reload (e.g., for updating the UI or handling user inputs).<\/li>\n<\/ul>\n\n
\n  \n  \n  DOM Methods:\n<\/h3>\n\n
Here are some commonly used DOM methods in JavaScript:<\/p>\n
\n
\ngetElementById(): Selects an element by its ID.<\/li>\n
\nquerySelector(): Selects the first matching element using a CSS selector.<\/li>\n
\ncreateElement(): Creates a new HTML element.<\/li>\n
\nappendChild(): Adds a new child node to an element.<\/li>\n
\nremoveChild(): Removes a child node from an element.<\/li>\n
\nsetAttribute(): Sets an attribute on an element.<\/li>\n
\naddEventListener(): Attaches an event handler to an element.<\/li>\n<\/ul>\n\n
\n  \n  \n  Example in Action:\n<\/h3>\n\n\n\n
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