妙V课堂 Vue课程“年终任务列表案例”
demo演示
html结构
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ToDoList</title>
<link rel="stylesheet" type="text/css" href="./css/index.css">
<script src = "./js/vue.js"></script>
</head>
<body>
<div class="page-top">
<div class="page-content">
<h2>任务计划列表</h2>
</div>
</div>
<div class="main">
<h3 class="big-title">添加任务：</h3>
<input type="text"
checked="" placehoder="例如：吃饭睡觉打豆豆；提示：+回车即可添加任务" class="task-input"
v-model="todo"
v-on:keyup.enter="addTodo"
/>
<ul class="task-content" v-show="list.length">
<li>
{{noCheckeLength}}个任务未完成
</li>
<li class="action">
<a class="active" href="#all">所有任务</a>
<a href="#unfinished">未完成的任务</a>
<a href="#finished">完成的任务</a>
</li>
</ul>
<h3 class="big-title">任务列表：</h3>
<div class="tasks">
<span class="no-task-tip" v-show="!list.length">还没有添加任何任务</span>
<ul class="todo-list">
<li class="todo" v-for="item in filteredList" :class="{completed:item.isChecded,editing:item===edtorTodos}" >
<div class="view">
<input type="checkbox" v-model="item.isChecded" class="toggle" >
<label @dblclick="edtorTodo(item)">{{item.title}}</label>
<button class="destroy" @click="deleteTodo(item)"></button>
</div>
<input
type="text"
class="edit"
v-model="item.title"
v-focus="edtorTodos === item"
@blur="edtorTodoed(item)"
@keyup.enter="edtorTodoed(item)"
@keyup.esc="cancelTodo(item)"
/>
</li>
</ul>
</div>
</div>
<script src="./js/app.js"></script>
</body>
</html>
js代码
/*var list =[
{
title:‘吃饭打豆豆‘,
isChecded:false //不选中
},
{
title:‘吃饭打豆豆‘,
isChecded:true //选中
}
]*/
//存取localStorage中的数据
var store ={
save(key,value){
localStorage.setItem(key,JSON.stringify(value));
},
fetch(key){
return JSON.parse(localStorage.getItem(key)) || [];
}
}
var list = store.fetch(‘miaov-new-class‘);
//过滤的时候有三种情况 all finished unfinished
var filter = {
all:function(list){
return list;
},
finished:function(list){
return list.filter(function(item){
return item.isChecded;
});
},
unfinished:function(list){
return list.filter(function(item){
return !item.isChecded;
});
}
}
var vm = new Vue({
el:‘.main‘,
data:{
list:list,
todo:‘‘,
edtorTodos:‘‘,
beforeTitle:‘‘,//记录编辑时的title
visibility:‘all‘//通过属性值变化进行赛选
},
watch:{
/*list:function(){//监控list这个属性，当这个属性发生变化就会触发这个函数
store.save(‘miaov-new-class‘,this.list);
}*/
list:{
handler:function(){
store.save(‘miaov-new-class‘,this.list);
},
deep:true
}
},
computed:{
// 过滤属性
noCheckeLength:function(){
return this.list.filter(function(item){
return !item.isChecded
}).length
},
filteredList:function(){
//找到过滤函数，就返回过滤后的数据，如果没有就返回所有数据
return filter[this.visibility]?filter[this.visibility](list):list;
}
},
methods:{
addTodo:function () {//添加任务
// 向list中添加一项任务
this.list.push({
title:this.todo,
isChecded:false
});
},
deleteTodo(todo){//删除任务
var index = this.list.indexOf(todo);
this.list.splice(index,1);
},
edtorTodo(todo){//编辑任务
//编辑任务的时候记录下编辑这条任务的title，方便在取消的时候从新赋值给取消时的title
this.beforeTitle = todo.title;
this.edtorTodos = todo;
},
edtorTodoed(todo){
this.edtorTodos=‘‘
},
cancelTodo(todo){//取消编辑任务
todo.title = this.beforeTitle;
this.edtorTodos=‘‘
}
},
directives:{//自定义指令
focus:{
update(el,binding){
if(binding.value){
el.focus();
}
}
}
}
});
function watchHashChange(){
var hash = window.location.hash.slice(1);
vm.visibility = hash;
}
window.addEventListener(‘hashchange‘,watchHashChange);
css代码
body {
margin:0;
background-color: #fafafa;
font: 14px ‘Helvetica Neue‘, Helvetica, Arial, sans-serif;
}
h2{
margin:0;
font-size: 12px;
}
a {
color: #000;
text-decoration: none;
}
input {
outline: 0;
}
button {
margin: 0;
padding: 0;
border: 0;
background: none;
font-size: 100%;
vertical-align: baseline;
font-family: inherit;
font-weight: inherit;
color: inherit;
outline: 0;
}
ul {
padding:0;
margin:0;
list-style: none;
}
.page-top {
width: 100%;
height: 40px;
background-color: #db4c3f;
}
.page-content {
width: 50%;
margin: 0px auto;
}
.page-content h2{
line-height: 40px;
font-size: 18px;
color: #fff;
}
.main {
width: 50%;
margin: 0px auto;
box-sizing:border-box;
}
.task-input {
width: 99%;
height:30px;
outline: 0;
border: 1px solid #ccc;
}
.task-count{
display: flex;
margin:10px 0;
}
.task-count li {
padding-left: 10px;
flex: 1;
color: #dd4b39;
}
.task-count li:nth-child(1){
padding: 5px 0 0 10px;
}
.action {
text-align: center;
display: flex;
}
.action a {
margin: 0px 10px;
flex: 1;
padding: 5px 0;
color: #777;
}
.action a:nth-child(3){
margin-right: 0;
}
.active {
border: 1px solid rgba(175, 47, 47, 0.2);
}
.tasks {
background-color: #fff;
}
.no-task-tip {
padding:10px 0 10px 10px;
display: block;
border-bottom: 1px solid #ededed;
color:#777;
}
.big-title {
color: #222;
}
.todo-list {
margin: 0;
padding: 0;
list-style: none;
}
.todo-list li {
position: relative;
font-size: 16px;
border-bottom: 1px solid #ededed;
}
.todo-list li:hover {
background-color: #fafafa;
}
.todo-list li.editing {
border-bottom: none;
padding: 0;
}
.todo-list li.editing .edit {
display: block;
width: 506px;
padding: 13px 17px 12px 17px;
margin: 0 0 0 43px;
}
.todo-list li.editing .view {
display: none;
}
.todo-list li .toggle {
text-align: center;
width: 40px;
/* auto, since non-WebKit browsers doesn‘t support input styling */
height: auto;
position: absolute;
top: 5px;
bottom: 0;
margin: auto 0;
border: none; /* Mobile Safari */
-webkit-appearance: none;
appearance: none;
}
.toggle {
text-align: center;
width: 40px;
/* auto, since non-WebKit browsers doesn‘t support input styling */
height: auto;
position: absolute;
top: 5px;
bottom: 0;
margin: auto 0;
border: none; /* Mobile Safari */
-webkit-appearance: none;
appearance: none;
}
.toggle:after {
content: url(‘data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="40" fill="none" stroke="#ededed" stroke-width="3"/></svg>‘);
}
.toggle:checked:after {
content: url(‘data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="40" fill="none" stroke="#bddad5" stroke-width="3"/><path fill="#5dc2af" d="M72 25L42 71 27 56l-4 4 20 20 34-52z"/></svg>‘);
}
.todo-list li label {
white-space: pre-line;
word-break: break-all;
padding: 15px 60px 15px 15px;
margin-left: 45px;
display: block;
line-height: 1.2;
transition: color 0.4s;
}
.todo-list li.completed label {
color: #d9d9d9;
text-decoration: line-through;
}
/*.tip-toggle {
padding-left: 0;
position: relative;
}
.tip-toggle .toggle {
top: -2px;
}
.tip-toggle span {
margin-left: 45px;
}*/
.todo-list li .destroy {
display: none;
position: absolute;
top: 0;
right: 10px;
bottom: 0;
width: 40px;
height: 40px;
margin: auto 0;
font-size: 30px;
color: #cc9a9a;
margin-bottom: 11px;
transition: color 0.2s ease-out;
}
.todo-list li .destroy:hover {
color: #af5b5e;
}
.todo-list li .destroy:after {
content: ‘ב;
}
.todo-list li:hover .destroy {
display: block;
}
.todo-list li .edit {
display: none;
}
.todo-list li.editing:last-child {
margin-bottom: -1px;
}
时间： 2024-10-02 21:33:59