需求：實現待辦事項
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>todoList</title>
<style>
#todoList {
list-style: none;
margin:10px 0px;
padding:0;
width:600px;
}
#todoList li {
margin-bottom:5px;
padding: 10px;
border: 1px solid #ccc;
background:#f5f5f5;
position: relative;
}
input {
padding:10px;
font-size:16px;
border:1px solid #ccc;
}
button {
padding:10px 20px;
border:1px solid #ccc;
background: #f5f5f5;
outline: none;
cursor: pointer;
}
#todoList span {
position: absolute;
right: 10px;
cursor: pointer;
}
</style>
</head>
<body>
<input type="text" id="content">
<button id="btn">添加</button>
<ul id="todoList">
<li>取釣魚 <span>×</span></li>
<li>取洗澡 <span>×</span></li>
<li>取吃飯 <span>×</span></li>
<li>去睡覺 <span>×</span></li>
</ul>
<script>
var input = document.querySelector('#content');
var btn = document.querySelector('#btn');
var todoList= document.querySelector('#todoList');
var spans = document.querySelectorAll('#todoList span');
btn.onclick = function(){
//獲取 input的內置
var text = input.value;
//創建li元素 並給li元素添加包裹 內容
var li = document.createElement('li');
li.innerText = text;
var span = document.createElement('span');
span.innerHTML = '×';
li.appendChild(span);
//把li元素添加到ul中
todoList.appendChild(li);
}
/*spans.forEach(function(span){
span.onclick = function(){
todoList.removeChild(this.parentNode)
}
})*/
//委派方式綁定
todoList.onclick = function(event) {
if (event.target.nodeName === 'SPAN') {
this.removeChild(event.target.parentNode);
}
}
</script>
</body>
</html>