JSFiddle - React, Tailwind, and code Playground

by birdie2019

HTML

<div class="container">
    <h1>待辦事項</h1>
    <div id="input-panel">
      <input type="text" id="input" placeholder="請輸入待辦事項...">
      <select id="event-cat" onchange="changeColor()">
        <option value="none" selected disabled hidden>事項分類</option>
        <option value="normal">一般</option>
        <option value="important">重要</option>
        <option value="urgent">緊急</option>
      </select>
      <button class="add-btn" onclick="add()" >+</button>
    </div>
    
  </div>
  <div class="container">
    <ul id="list">
    </ul>
    <button id="export-btn">匯出</button>
  </div>

CSS

* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-size: 10px;
    color: #606060;
  }
  
  body {
    background-color: #FFF0DF;
  }
  
  .container {
    width: 400px;
    margin: 30px auto;
  }
  
  /* input-panel */
  h1 {
    text-align: center;
    font-size: 2.4rem;
    letter-spacing: 3px;
    
  }
  
  #input-panel {
    display: flex;
    justify-content: center;
    margin: 10px 0;
  }
  
  #input-panel > input {
    flex: 1;
    padding: 10px 8px;
    border-radius: 5px 0 0 5px;
    border: 0;
    outline: 0;
    font-size: 1.5rem;
    letter-spacing: 1px;
  }
  
  .text-normal {
    color: #6B8F71;
    font-weight: 500;
  }
  .text-important {
    color: #F49344;
    font-weight: 500;
  }
  .text-urgent {
    color: #BF1802;
    font-weight: 500;
  }
  
  #event-cat {
    border: 0;
    border-left: 3px solid #fffaf5;
    width: 100px;
    font-size: 1.5rem;
    letter-spacing: 1px;
    outline: 0;
    text-align: center;
  }
  
  .add-btn {
    border: 0;
    width: 40px;
    border-radius: 0 5px 5px 0;
    font-size: 1.8rem;
    font-weight: 700;
    cursor: pointer;
    background-color: #546A76;
    color: #fff;
  }
  
  /* list */
  
  #list > li {
    display: flex;
    justify-content: space-between;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 10px 8px;
    margin-bottom: 8px;
    border-radius: 5px;
  }
  
  #list > li > span {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 1px;
  }
  
  #list > li > button {
    background-color: transparent;
    border: 0;
    cursor: pointer;
    font-size: 1.8rem;
    font-weight: 900;
    transition: all 0.3s; 
  }
  
  #list > li > button:hover {
    color: #FA829C;
    transform: scale(1.3);
  }
  
  /* export-btn */
  #export-btn {
    background-color: #8E6F64;
    border: 0;
    color: #fff;
    border: 1px solid #AC8172;
    padding: 4px 20px 4px 4px;
    font-size: 1.5rem;
    letter-spacing: 1px;
   ...

JavaScript

function add() {
  var input = document.getElementById('input');
  var list = document.getElementById('list');
  var li = document.createElement('li');
  var span = document.createElement('span');
  var btn = document.createElement('button');
  var eventCat = document.getElementById('event-cat');
  var eventCatIndex = eventCat.selectedIndex;
  var eventValue = eventCat.options[eventCatIndex].value;
  var inputValue = input.value;
  if (eventValue != 'none' && inputValue != '') {
      list.append(li);
      li.append(span);
      span.className = eventValue;
      li.append(btn);
      btn.onclick = deleteLi;
      btn.textContent = 'x';
      span.textContent = inputValue;
      input.value = '';
      eventCat.value = 'none';
      input.className = '';
  } else {
      alert('請填寫待辦事項和事件分類');
  }
}

function deleteLi() {
	var yes = confirm('確定要刪除嗎？');
  if (yes) {
  	event.target.parentElement.remove();
  }
}

var exportBtn = document.getElementById('export-btn');
exportBtn.onclick = exportList;

function exportList() {
  var list = document.getElementById('list').children;
  var text = ''; 
  var num = 1;
  for (var item of list) {
  var getClassName = item.children[0].className;
  if (getClassName == 'normal') {
    text = text + num.toString() + '.' + ` ` + item.children[0].textContent + ` `;
  } else if (getClassName == 'important') {
    text = text + num.toString() + '.' + ` ` + '*' + item.children[0].textContent+ '*' + ` `;
  } else {
    text = text + num.toString() + '.' + ` ` + '**' + item.children[0].textContent+ '**' + ` `;
  }
  num = num + 1;
  }
  if (text != ''){
  	alert('今日待辦：' + text);
  } else {
  	alert('今日無待辦事項');
  }  
}

function changeColor() {
	var eventCatValue = event.target.options[event.target.selectedIndex].value;
  console.log(eventCatValue);
  var input = document.getElementById('input');
  if (eventCatValue == 'normal') {
  	input.className = 'text-normal';
  } else if (eventCatValue == 'important') {
  	input.className =...