JavaScript 系列二：第7課

by tp655998

HTML

<script src="https://kit.fontawesome.com/1d5482fd11.js" crossorigin="anonymous"></script>

<section id="to-do-list" class="">
  <div id="create-group" class="">
    <input id="new-todo-txt" class="btn" type="text" placeholder="請輸入待辦事項...">
    <select id="note-level" class="btn" onchange="level_effect()">
      <option value="" selected disabled hidden>事項分類</option>
      <option value="success">一般</option>
      <option value="primary">重要</option>
      <option value="danger">緊急</option>
    </select>
    <button class="btn" onclick="add()">新增</button>
  </div>
  
  <div id="list-manager">
      <h3 id="title">代辦事項</h3>
      <button id="output" class="btn" onclick="output()">匯出</button>
  </div>

  <ul id="list" class="">
<!--       <li class="note success">
        <i class="far fa-regular fa-square" onclick="status_update()"></i>
        <span class="content">111</span>
        <mark class="status">(已完成)</mark>
        <i class="fa fa-solid fa-trash" onclick="deleteNote()"></i> 
      </li>
      <li class="note primary">
        <i class="fas fa-regular fa-check" onclick="status_update()"></i>
        <span class="content">111</span>
        <mark class="status">(已完成)</mark>
        <i class="fa fa-solid fa-trash" onclick="deleteNote()"></i> 
      </li>
      <li class="note danger">
        <i class="fas fa-regular fa-check" onclick="status_update()"></i>
        <span class="content">111</span>
        <mark class="status">(已完成)</mark>
        <i class="fa fa-solid fa-trash" onclick="deleteNote()"></i> 
      </li> -->
  </ul>
  
</section>

CSS

body{
  background-color: #eee;
}
#to-do-list{
  width: 50%;
  margin: 0 auto;
  background-color: rgba(255, 255, 255, .35);
  border-radius: .5rem;
  padding: 1rem;
  border: 1px solid #666;
}



#create-group{
  margin-top: .5rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0.5rem;
}


.btn{
  padding: .5rem;
  background-color: #fff;
  border: 1px solid #aaa;
  border-radius: .5rem;
}

.btn:hover{
  background-color: #333;
  color: #fff;
  cursor: pointer;
}

#list-manager{
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 5fr 1fr;
  background-color: #D7B98E;
  border-radius: .5rem;
}

#output{
  border-radius: 0 .5rem .5rem 0;
  font-weight: 900;
}

#title{
  text-align: center;
  font-size: 1rem;
}

#list{
  list-style: none;
  padding: 0;
}
.note{
  padding: 1rem 1rem 1rem 1rem;
  background-color: #fff;
  border: 1px solid #aaa;
  border-radius: .5rem;
  margin-bottom: .5rem;
  transition: .5s;
  display:flex;
  justify-content: space-between;
}

.note:hover{
  background-color: rgba(218, 201, 166, .5);
}
.note i:nth-child(1){
/*   position: absolute;
  left: 5%; */
}
.note i:nth-child(2){
/*   position: absolute;
  right: 5%; */
}
.note i:hover{
  cursor: pointer;
}

.note i:last-child:hover{
  color: red;
  cursor: pointer;
}

.note .status{
  font-size: .9rem;
  display: none;
}

.success{
  background: linear-gradient(90deg, rgba(181,202,160,.3) 0%, rgba(190,194,63,0.3) 100%);
}
.success:hover{
  background: linear-gradient(90deg, rgba(181,202,160,.5) 0%, rgba(190,194,63,0.5) 100%);  
}

.primary{
  background: linear-gradient(90deg, rgba(129,199,133,.3) 0%, rgba(88,178,220,0.3) 100%);
}
.primary:hover{
  background: linear-gradient(90deg, rgba(129,199,133,.5) 0%, rgba(88,178,220,0.5) 100%); 
}

.danger{
  background: linear-gradient(90deg, rgba(244,167,185,.3) 0%, rgba(193,50,142,0.3) 100%);
}
.danger:hover{
  background: linear-gradient(90deg, rgba(244,167,185,.5) 0%, rgba(193,50,142,0.5) 100%); 
}

JavaScript

function add()
{
	const new_todo_txt = document.querySelector('#new-todo-txt');  //input
  const note_level = document.querySelector('#note-level').value; //level

  if(new_todo_txt.value==''){
  	alert('請輸入代辦事項！');
  }
  else if(note_level==''){
  	alert('請選擇事項分類！');
  }
  else{
   	const list = document.querySelector('#list');

    let item = document.createElement("li");
    item.className = `note ${note_level}`;
    
    let square = document.createElement("i");
    square.className = 'far fa-regular fa-square';
    square.onclick = status_update;
    
    let todo_txt = document.createElement("span");
    todo_txt.className = 'todo-txt';
    todo_txt.textContent = new_todo_txt.value;

    let status = document.createElement("mark");
    status.className = 'status';
    status.textContent = '(已完成)';

    let del = document.createElement("i");
    del.className = 'fa fa-solid fa-trash';
    del.onclick = deleteNote;

		item.append(square);
    item.append(todo_txt);
    item.append(status);
    item.append(del);
   
    list.append(item);
    
    new_todo_txt.value = ''; //clean input
  }
}

function deleteNote(){
	let check = confirm('確定要刪除嗎？');
  if(check){
   	/* note > span */
		event.target.closest('li').remove();
  }

}

function status_update(){
  const ing = 'far fa-regular fa-square';
  const finish = 'fas fa-regular fa-check';
  let state = event.target;
  
	if(state.className == ing){
  	state.className = finish;
    state.closest('li').querySelector('.status').style.display = "initial"; /*已完成*/
  }
  else{
  	state.className = ing;
    state.closest('li').querySelector('.status').style.display = "none"; /*已完成*/
  }
}

function output(){
  const list = document.querySelector('#list');
  let export_txt = '今日待辦： ';
  
  for (let i=0; i<list.children.length; i++) {
    let todo = list.children[i].querySelector('.todo-txt').textContent;
    let note_level = list.children[i].className.split(' ')[1];
    
    if(note_level=='success'){
    	export_txt +=...