效果如下：
前端及js代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ToDOList</title>
<link rel="stylesheet" href="todolist.css">
</head>
<body style="background-color: #b0b0b0;margin: 0 auto;">
<div class="pg-top">
<label id="l1">ToDoList</label>
<input id="i1" type="text" placeholder="请输入待办项目" />
<input id="i2" type="button" value="确定">
</div>
<div class="pg-body">
<div class="body-middle">
<div>
<div>
<h2 style="color: yellowgreen">未完成</h2>
</div>
<div>
<ul id="u1">
</ul>
</div>
</div>
<div>
<div>
<h2 style="color: greenyellow">已完成</h2>
</div>
<div>
<ul id="u2">
</ul>
</div>
</div>
<div class="middle-bottom">
<button value="清除全部" onclick="clear_all()" >清除全部</button>
</div>
</div>
</div>
<script>
flag = false;
//取值
var msg = document.getElementById('i1');
//点击确定的操作
var sure = document.getElementById('i2');
sure.onclick = function () {
//先判断输入不能为空
if(msg.value === ''){
alert('输入不能为空');
return
}
ul1 = document.getElementById('u1');
ul2 = document.getElementById('u2');
//新建一个li
var li = document.createElement('li');
//往li里添加内容--innerHTML
li.innerHTML = '<label>' + msg.value + '</label>' + '<span><button class="b1">删除</button> <button class="b2">完成</button></span>';
//判断后加入到ul1里面去
var lis = document.getElementsByTagName('li');
ul1.appendChild(li);
//输入完后将输入框的内容清空
msg.value = '';
//点击删除对button b1 进行操作~~
//var as = document.getElementsByTagName('a');
var as = document.getElementsByClassName('b1');
for (var i = 0; i < as.length; i++) {
as[i].onclick = function () {
//this代表as[i]
//判断是哪个ul下的再进行删除操作
if (this.parentNode.parentNode.parentNode === ul1) {
ul1.removeChild(this.parentNode.parentNode);
}
else {
ul2.removeChild(this.parentNode.parentNode);
}
}
}
//点击完成对button b2 进行操作~
var as1 = document.getElementsByClassName('b2');
for (var j = 0; j < as.length; j++) {
as1[j].onclick = function () {
//将完成的li 添加到ul2中
li_u2 = this.parentNode.parentNode;
//console.log(li_u2.firstChild);
//console.log(li_u2.lastChild.firstChild);
//console.log(li_u2.lastChild.firstChild.nextSibling);
//console.log(li_u2.lastChild.lastChild);
//删除完成那个按钮
ll = li_u2.lastChild.lastChild;
li_u2.lastChild.removeChild(ll);
ul2.appendChild(li_u2);
}
}
};
function clear_all() {
var uu1 = document.getElementById('u1');
var uu2 = document.getElementById('u2');
uu1.innerHTML = '';
uu2.innerHTML = '';
}
</script>
</body>
</html>
前端+js
css效果如下：
*{
margin:0;
padding: 0;
}
button{
cursor: pointer;
}
label{
display: block;
}
ul{
list-style-type: none;
}
.pg-top{
height:55px;
width:100%;
position: fixed;
color: white;
background-color: #1d3cb0;
line-height:55px;
/*margin-top: -59px;*/
}
.pg-body{
position: relative;
width:100%;
}
.body-middle{
position: absolute;
left:22%;
right:22%;
margin-top:57px;
width:56%;
margin-left: auto;
margin-right: auto;
background-color: #2b84da;
}
.middle-bottom{
text-align: center;
}
#l1{
position: fixed;
left: 35%;
}
#i1 {
position: fixed;
left:40%;
top:16px;
width:355px;
height:19px;
}
#i2 {
position: fixed;
left:64%;
top:16px;
cursor: pointer;
}
css