零基础入门前端：HTML+CSS+JS 快速上手教程（附实战项目）

HTML 基础结构

<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>零基础前端实战</title> <link rel="stylesheet" href="style.css"> </head> <body> <header> <h1>我的第一个网页</h1> </header> <main> <button id="actionBtn">点击交互</button> <p id="outputText">默认文本</p> </main> <script src="script.js"></script> </body> </html>

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CSS 基础样式

/* 全局样式 */ body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 0; padding: 20px; background-color: #f4f4f4; } header { background: #35424a; color: white; padding: 10px 0; text-align: center; } button { background: #e8491d; color: white; border: none; padding: 10px 20px; cursor: pointer; } button:hover { background: #333; }

JavaScript 交互逻辑

document.getElementById('actionBtn').addEventListener('click', function() { const outputElement = document.getElementById('outputText'); outputElement.textContent = '按钮已点击！'; outputElement.style.color = 'green'; });

实战项目：简易待办清单

<!-- HTML部分 --> <div class="todo-container"> <input type="text" id="todoInput" placeholder="输入任务..."> <button id="addBtn">添加</button> <ul id="todoList"></ul> </div>

/* CSS部分 */ .todo-container { max-width: 500px; margin: 20px auto; } #todoInput { width: 70%; padding: 8px; } ul { list-style-type: none; padding: 0; } li { background: white; margin: 5px 0; padding: 10px; border-left: 3px solid #e8491d; }

// JavaScript部分 document.getElementById('addBtn').addEventListener('click', function() { const input = document.getElementById('todoInput'); const list = document.getElementById('todoList'); if (input.value.trim() !== '') { const li = document.createElement('li'); li.textContent = input.value; list.appendChild(li); input.value = ''; } });