learn-html/about.html at master · Sumit-Rajak99/learn-html · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>To-Do List App</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background: #f3f4f6;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
    }
    .container {
      background: #fff;
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      width: 350px;
    }
    h1 {
      text-align: center;
      margin-bottom: 20px;
      color: #333;
    }
    input {
      width: 70%;
      padding: 10px;
      border: 1px solid #ddd;
      border-radius: 8px;
    }
    button {
      padding: 10px;
      margin-left: 5px;
      border: none;
      border-radius: 8px;
      cursor: pointer;
    }
    .add-btn {
      background: #4CAF50;
      color: white;
    }
    ul {
      list-style: none;
      padding: 0;
      margin-top: 15px;
    }
    li {
      background: #f9fafb;
      padding: 10px;
      margin: 5px 0;
      border-radius: 8px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    li.done {
      text-decoration: line-through;
      color: gray;
    }
    .del-btn {
      background: red;
      color: white;
      padding: 5px 8px;
      border-radius: 6px;
    }
  </style>
</head>
<body>
  <div class="container">
    <h1>📝 To-Do List</h1>
    <div>
      <input type="text" id="taskInput" placeholder="Enter new task...">
      <button class="add-btn" onclick="addTask()">Add</button>
    </div>
    <ul id="taskList"></ul>
  </div>

  <script>
    const taskInput = document.getElementById("taskInput");
    const taskList = document.getElementById("taskList");

    function addTask() {
      const taskText = taskInput.value.trim();
      if (taskText === "") return alert("Please enter a task!");

      const li = document.createElement("li");
      li.innerHTML = `
        <span onclick="toggleDone(this)">${taskText}</span>
        <button class="del-btn" onclick="deleteTask(this)">X</button>
      `;
      taskList.appendChild(li);
      taskInput.value = "";
    }

    function deleteTask(button) {
      button.parentElement.remove();
    }

    function toggleDone(task) {
      task.parentElement.classList.toggle("done");
    }
  </script>
</body>
</html>