Welcome to My Website<\/h1>\n

This is a paragraph of text.<\/p>\n \n Visit Example.com<\/a>\n<\/body>\n<\/html><\/pre>

HTML works by parsing these tags to build a DOM (Document Object Model), which is a tree structure that represents the hierarchical relationship of a web page. Understanding DOM is crucial for subsequent CSS and JavaScript operations.<\/p>

The function of CSS is to control the appearance and layout of a web page. It defines the style of elements through selectors and attributes, making the web page not only clear structure, but also beautiful and elegant. The advantage of CSS is that it can be independent of HTML content, separate styles and structures, and improves the maintainability and reusability of the code.<\/p>

 body {\n    font-family: Arial, sans-serif;\n    background-color: #f0f0f0;\n}\n\nh1 {\n    color: #333;\n    text-align: center;\n}\n\np {\n    color: #666;\n    line-height: 1.5;\n}\n\nimg {\n    max-width: 100%;\n    height: auto;\n}\n\na {\n    color: #0066cc;\n    text-decoration: none;\n}\n\na:hover {\n    text-decoration: underline;\n}<\/pre>
 CSS works by applying styles to the DOM through the browser's rendering engine. The selector matches elements in the DOM and applies the corresponding style attributes. Understanding the cascading and inheritance of CSS is essential for efficient use of CSS.<\/p>
 JavaScript: Magic to make web pages move<\/h3>
 The role of JavaScript is to add dynamic behavior to web pages. It can respond to user actions, modify the DOM, process data, and even communicate with the server. The advantage of JavaScript is that it can make web pages more interactive and intelligent and improve user experience.<\/p>
 document.addEventListener('DOMContentLoaded', function() {\n    const button = document.querySelector('button');\n    button.addEventListener('click', function() {\n        alert('Button clicked!');\n    });\n\n    const input = document.querySelector('input');\n    input.addEventListener('input', function() {\n        console.log('Input value:', input.value);\n    });\n});<\/pre>
 JavaScript works by responding to user operations and system events through an event-driven model. It can directly manipulate the DOM and modify the attributes and contents of elements. Understanding event loops and asynchronous programming is essential for writing efficient JavaScript code.<\/p>
 Example of usage<\/h2>
 Basic usage of HTML<\/h3>
 The basic usage of HTML is to define the structure of a web page through tags. Here is a simple HTML page example:<\/p>
 \n\n\n    \n