CEOS-Developers · sungahChooo · Sep 9, 2025 · Sep 12, 2025 · Sep 13, 2025 · Sep 16, 2025
diff --git a/favicon.ico b/favicon.ico
diff --git a/index.html b/index.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html lang="ko">
+  <head>
+    <meta charset="UTF-8" />
+    <title>투두 앱</title>
+    <link rel="stylesheet" href="style.css" />
+    <link rel="icon" href="/favicon.ico">
+  </head>
+  <body>
+    <h1 id="title"">To do list</h1>
+
+    <!-- 날짜별 조회 및 추가 날짜도 같이 사용 -->
+    <section id="get-by-date">
+      <label for="filterDate">날짜: </label>
+      <input type="date" id="selectedDateInput" />
+    </section>
+
+    <!-- 투두 입력 영역 -->
+    <section id="inputDiv">
+      <input type="text" id="todoInput" placeholder="할 일을 입력하세요." />
+      <button id="addBtn">추가</button>
+      <span id="countDisplay"></span>
+    </section>
+
+    <!-- 투두 리스트 영역 -->
+    <ul id="todoList"></ul>
+
+    <script src="script.js"></script>
+  </body>
+</html>
diff --git a/script.js b/script.js
@@ -0,0 +1,127 @@
+document.addEventListener("DOMContentLoaded", () => {
+  const todoInput = document.getElementById("todoInput");
+  const addBtn = document.getElementById("addBtn");
+  const todoList = document.getElementById("todoList");
+  const selectedDateInput = document.getElementById("selectedDateInput");
+  const countDisplay = document.getElementById("countDisplay");
+  const title = document.getElementById("title"); // h1 선택
+
+  //데이터 로드 & 초기화
+  let todos = JSON.parse(localStorage.getItem("todos")) || [];
+
+  // 날짜 입력 기본값: 오늘
+  selectedDateInput.value = getToday();
+
+  // 초기 렌더링
+  renderTodos(todos);
+
+  /*투두 추가기능*/
+  addBtn.addEventListener("click", () => {
+    const text = todoInput.value.trim();
+    const date = selectedDateInput.value;
+
+    if (text === "" || date === "") {
+      alert("할 일과 날짜를 입력하세요!");
+      return;
+    }
+
+    const todo = {
+      id: Date.now(),
+      text,
+      date,
+      completed: false, // 완료 여부 추가
+    };
+
+    todos.push(todo);
+    saveTodos();
+    filterByDate(date);
+
+    todoInput.value = "";
+    selectedDateInput.value = date; // 날짜 유지
+  });
+
+  /* 날짜별 조회 기능 */
+  selectedDateInput.addEventListener("change", () => {
+    filterByDate(selectedDateInput.value);
+  });
+
+  function filterByDate(date) {
+    if (!date) return;
+
+    const filtered = todos.filter((t) => t.date === date);
+    renderTodos(filtered);
+    countDisplay.textContent = `${filtered.length}개`;
+  }
+
+  /* 제목 클릭시 오늘 날짜로 조회 기능 */
+  title.addEventListener("click", () => {
+    selectedDateInput.value = getToday(); // 날짜 오늘로 초기화
+    filterByDate(selectedDateInput.value); // 조회 버튼 없이 바로 조회
+  });
+
+  /* 투두 렌더링 */
+  function renderTodos(list) {
+    todoList.innerHTML = "";
+
+    if (!list || list.length === 0) {
+      const empty = document.createElement("li");
+      empty.textContent = "표시할 할 일이 없습니다.";
+      empty.style.listStyle = "none";
+      todoList.appendChild(empty);
+      return;
+    }
+
+    list.forEach((todo) => {
+      const li = document.createElement("li");
+      li.dataset.id = todo.id;
+
+      // 투두 완료 체크박스
+      const checkbox = document.createElement("input");
+      checkbox.type = "checkbox";
+      checkbox.checked = todo.completed;
+      checkbox.addEventListener("change", () => {
+        todo.completed = checkbox.checked;
+        saveTodos();
+        renderTodos(list); // 상태 업데이트 후 다시 렌더링
+      });
+
+      // 할 일 텍스트
+      const span = document.createElement("span");
+      span.textContent = todo.text;
+      if (todo.completed) {
+        span.style.textDecoration = "line-through"; // 완료시 취소선
+        span.style.color = "gray";
+      }
+
+      //삭제 버튼
+      const delBtn = document.createElement("button");
+      delBtn.textContent = "삭제";
+      delBtn.classList.add("deleteBtn");
+      delBtn.addEventListener("click", () => {
+        todos = todos.filter((t) => t.id !== todo.id);
+        saveTodos();
+        renderTodos(todos);
+      });
+
+      // li에 요소 추가
+      li.appendChild(checkbox);
+      li.appendChild(span);
+      li.appendChild(delBtn);
+      todoList.appendChild(li);
+    });
+  }
+
+  /* 로컬 스토리지 저장 */
+  function saveTodos() {
+    localStorage.setItem("todos", JSON.stringify(todos));
+  }
+});
+
+/* 오늘 날짜 반환 */
+function getToday() {
+  const today = new Date();
+  const year = today.getFullYear();
+  const month = String(today.getMonth() + 1).padStart(2, "0");
+  const day = String(today.getDate()).padStart(2, "0");
+  return `${year}-${month}-${day}`;
+}
diff --git a/style.css b/style.css
@@ -0,0 +1,93 @@
+@import url("https://cdn.jsdelivr.net/npm/pretendard/dist/web/static/pretendard.css");
+body {
+  font-family: "Pretendard", "Noto Sans KR", sans-serif;
+  background-color: #f5f6fa;
+  margin: 0;
+  padding: 40px;
+  /*todo list들이 세로로 배열되도록*/
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+#title {
+  color: #636161;
+  font-size: 28px;
+  margin-bottom: 20px;
+  cursor: pointer;
+}
+#title:hover {
+  color: purple;
+}
+#inputDiv {
+  width: 320px;
+}
+
+#todoInput {
+  padding: 7px 10px;
+  font-size: 16px;
+  border: 1px solid #ddd;
+  border-radius: 8px;
+}
+
+#todoInput:focus {
+  border-color: #4a90e2;
+}
+
+#addBtn {
+  margin-left: 4px;
+  padding: 5px 10px;
+  font-size: 16px;
+  background-color: #4a90e2;
+  color: white;
+  border: none;
+  border-radius: 8px;
+  cursor: pointer;
+}
+
+#addBtn:hover {
+  background-color: #357abd;
+}
+#countDisplay {
+  width: 30px;
+  margin-left: 10px;
+  font-size: large;
+}
+/* 리스트 */
+#todoList {
+  margin-top: 20px;
+  padding: 0;
+}
+
+#todoList li {
+  width: 320px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  background: white;
+  margin: 6px 0;
+  padding: 12px 16px;
+  border-radius: 8px;
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+  font-size: 16px;
+  color: #444;
+}
+
+/* 삭제 버튼 */
+.deleteBtn {
+  background-color: transparent;
+  color: #e74c3c;
+  border: none;
+  font-size: 14px;
+  cursor: pointer;
+  width: 40px;
+  flex-shrink: 0;
+}
+
+.deleteBtn:hover {
+  color: #c0392b;
+}
+
+#get-by-date {
+  margin-bottom: 50px;
+}