LearningCode/todo.html at master · 3m3m3m3m/LearningCode · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>My To-Do List</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background-color: pink;
      margin: 20px;
    }
    #container {
      background-color: whitesmoke;
      padding: 20px;
      max-width: 400px;
      margin: auto;
      box-shadow: 0 0 10px rgba(0,0,0,0.1);
    }
    h2 {
      text-align: center;
    }
    /* New: Counter styling */
    #counter {
      text-align: center;
      margin: 10px 0;
      font-weight: bold;
    }
    #todoInput {
      width: 70%;
      padding: 10px;
      font-size: 16px;
    }
    #addBtn {
      padding: 10px;
      font-size: 16px;
    }
    ul {
      list-style: none;
      padding: 0;
      margin-top: 20px;
    }
    li {
      padding: 10px;
      border-bottom: 1px solid #ddd;
      cursor: pointer;
    }
    li.completed {
      text-decoration: line-through;
      color: gray;
    }
  </style>
</head>
<body>
  <div id="container">
    <h2>What Should I Do? -UwU-</h2>
    <!-- Counter element -->
    <p id="counter">Tasks Left: 0</p>
    <input type="text" id="todoInput" placeholder="Enter a new task">
    <button id="addBtn">Add Task</button>
    <ul id="todoList"></ul>
  </div>
  <script>
    // Grab DOM elements
    const input = document.getElementById('todoInput');
    const addBtn = document.getElementById('addBtn');
    const todoList = document.getElementById('todoList');
    const counterDisplay = document.getElementById('counter');

    // -------------------------------
    // Local Storage Functions
    // -------------------------------
    // Save tasks to localStorage
    function saveTasks() {
      const tasks = [];
      const listItems = todoList.querySelectorAll('li');
      listItems.forEach(li => {
        tasks.push({
          text: li.textContent,
          completed: li.classList.contains('completed')
        });
      });
      localStorage.setItem('tasks', JSON.stringify(tasks));
    }

    // Load tasks from localStorage
    function loadTasks() {
      const tasks = JSON.parse(localStorage.getItem('tasks'));
      if (tasks) {
        tasks.forEach(task => {
          createTaskElement(task.text, task.completed);
        });
      }
      updateCounter();
    }

    // -------------------------------
    // Counter Function
    // -------------------------------
    // Update the counter display based on non-completed tasks
    function updateCounter() {
      const listItems = todoList.querySelectorAll('li');
      let count = 0;
      listItems.forEach(li => {
        if (!li.classList.contains('completed')) {
          count++;
        }
      });
      counterDisplay.textContent = 'Tasks Left: ' + count;
    }

    // -------------------------------
    // Task Creation & Interaction
    // -------------------------------
    // Create a new task element in the DOM and attach event listeners
    function createTaskElement(taskText, completed = false) {
      const li = document.createElement('li');
      li.textContent = taskText;
      if (completed) {
        li.classList.add('completed');
      }
      // Toggle the 'completed' state on click
      li.addEventListener('click', function() {
        li.classList.toggle('completed');
        saveTasks();    // Save changes when toggled
        updateCounter(); // Update the counter
      });
      todoList.appendChild(li);
    }

    // Add a new task using the text from the input field
    function addTask() {
      const taskText = input.value.trim();
      if (taskText !== "") {
        createTaskElement(taskText);
        input.value = "";
        saveTasks();    // Save the new task
        updateCounter(); // Update the counter
      }
    }

    // Event Listeners for button click and pressing "Enter"
    addBtn.addEventListener('click', addTask);
    input.addEventListener('keypress', function(event) {
      if (event.key === 'Enter') {
        addTask();
      }
    });

    // Load tasks from localStorage when the page loads
    window.onload = loadTasks;
  </script>
</body>
</html>