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JS网页设计案例

news 2025/8/3 22:18:04

下面是一个简单的 JavaScript 网页设计案例，展示了如何使用 HTML、CSS 和 JavaScript 创建一个动态的网页。

案例：简单的待办事项列表

1. HTML 部分

<!DOCTYPE html>
<html lang="zh">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>待办事项列表</title><link rel="stylesheet" href="styles.css">
</head>
<body><div class="container"><h1>我的待办事项</h1><input type="text" id="taskInput" placeholder="添加新任务..."><button id="addTaskButton">添加任务</button><ul id="taskList"></ul></div><script src="script.js"></script>
</body>
</html>

2. CSS 部分 (styles.css)

body {font-family: Arial, sans-serif;background-color: #f4f4f4;margin: 0;padding: 20px;
}.container {max-width: 400px;margin: auto;background: white;padding: 20px;border-radius: 5px;box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}h1 {text-align: center;
}input {width: calc(100% - 22px);padding: 10px;margin-bottom: 10px;
}button {width: 100%;padding: 10px;background-color: #28a745;color: white;border: none;border-radius: 5px;cursor: pointer;
}button:hover {background-color: #218838;
}ul {list-style-type: none;padding: 0;
}li {padding: 10px;border-bottom: 1px solid #ccc;display: flex;justify-content: space-between;align-items: center;
}li button {background-color: #dc3545;border: none;color: white;cursor: pointer;
}li button:hover {background-color: #c82333;
}

3. JavaScript 部分 (script.js)

document.getElementById('addTaskButton').addEventListener('click', function() {const taskInput = document.getElementById('taskInput');const taskValue = taskInput.value.trim();if (taskValue) {const taskList = document.getElementById('taskList');const li = document.createElement('li');li.textContent = taskValue;const deleteButton = document.createElement('button');deleteButton.textContent = '删除';deleteButton.addEventListener('click', function() {taskList.removeChild(li);});li.appendChild(deleteButton);taskList.appendChild(li);taskInput.value = '';} else {alert('请输入任务内容');}
});