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console 命令行工具 X clear

                    
>
console
//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 = [
	{
		title:"吃饭打豆豆",
		isChecked:true // 状态为false,为不选中  任务未完成
	},
	{
		title:"妙味课堂",
		isChecked:true   //状态为true,为选中    任务完成
	}
];*/

//取出所有的值
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.isChecked;
		})
	},
	unfinished:function(){
		return list.filter(function(item){
			return !item.isChecked;
		})
	}
}

var vm = new Vue({
	el:".main",
	data:{
		list:list,
		todo:"",
		edtorTodos:'',  //记录正在编辑的数据
		beforeTitle:'', //记录正在编辑的数据的title
		visibility: "all" //通过这个属性值的变化对数据进行筛选
	},
	watch:{
		/*list:function(){  //监控list这个属性,当这个属性对应的值发生变化就会执行函数
			store.save("miaov-new-class",this.list);
		}*/
		list:{
			handler:function(){
				store.save("miaov-new-class",this.list);
			},
			deep:true
		}
	},
	computed:{
		noCheckeLength:function(){
			return this.list.filter(function(item){
                return !item.isChecked
            }).length
		},
		filteredList:function(){			
			//找到了过滤函数,就返回过滤后的数据;如果没有返回所有数据
			return filter[this.visibility] ? filter[this.visibility](list) : list;

		}
	},
	methods:{
		addTodo(){  //添加任务
			this.list.push({
				title:this.todo,
				isChecked:false
			});
			this.todo = '';

		},
		deleteTodo(todo){ //删除任务
			var index = this.list.indexOf(todo);
			this.list.splice(index,1);

		},
		edtorTodo(todo){  //编辑任务
			console.log(todo);
			//编辑任务的时候,记录一下编辑这条任务的title,方便在取消编辑的时候重新给之前的title
			this.beforeTitle = todo.title;

			this.edtorTodos = todo;



		},
		edtorTodoed(todo){ //编辑任务成功
			this.edtorTodos = '';
		},
		cancelTodo(todo){  //取消编辑任务

			todo.title = this.beforeTitle;

			this.beforeTitle = '';

			//让div显示出来,input隐藏
			this.edtorTodos = '';
		}
	},
	directives:{
		"foucs":{
			update(el,binding){
				if(binding.value){
					el.focus();
				}
			}
		}
	}
});

function watchHashChange(){
	var hash = window.location.hash.slice(1);

	vm.visibility = hash;
	
}

watchHashChange();

window.addEventListener("hashchange",watchHashChange);
    <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 
            placeholder="例如:吃饭睡觉打豆豆;    提示:+回车即可添加任务" 
            class="task-input" 
            type="text"
            v-model="todo"
            v-on:keyup.13="addTodo"
        />
        <ul class="task-count" 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" :class="{completed: item.isChecked,editing: item === edtorTodos}" v-for="item in filteredList" >
                    <div class="view">
                        <input class="toggle" type="checkbox" v-model="item.isChecked" />
                        <label @dblclick="edtorTodo(item)">{{ item.title }}</label>
                        <button class="destroy" @click="deleteTodo(item)"></button>
                    </div>
                    <input 
                        v-foucs="edtorTodos === item" 
                        class="edit" 
                        type="text" 
                        v-model = "item.title"
                        @blur="edtorTodoed(item)"
                        @keyup.13="edtorTodoed(item)"
                        @keyup.esc="cancelTodo(item)"
                    />
                </li>
            </ul>
        </div>
    </div>
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: '×';
}

.todo-list li:hover .destroy {
    display: block;
}

.todo-list li .edit {
    display: none;
}

.todo-list li.editing:last-child {
    margin-bottom: -1px;
}