Vue—制作一个todoList

我们将制作这样一个任务计划列表：

功能分析：

1. 在输入框输入任务，回车创建新任务。

2. 将新创建任务显示到任务列表里。

2. 点击每个任务前面的选择框，就可以将任务标记为已完成。

3. 双击任务来修改任务内容。

4. 点击每个任务的后面的×符号，删除任务。

5. 提示有几个任务未完成。

6. 输入框下方点击未完成任务，已完成任务和所有任务来显示对应的任务。

附：todoList代码

todoList.html：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>todoList</title>
    <link rel="stylesheet" href="index.css">
    <script src="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 
            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>{{nocheckLength}}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 === editorTodos}" v-for="item in filteredList" >
                    <div class="view">
                        <input class="toggle" type="checkbox" v-model="item.isChecked" />
                        <label @dblclick="editorTodo(item)">{{ item.title }}</label>
                        <button class="destroy" @click="deleteTodo(item)"></button>
                    </div>
                    <input 
                        v-focus="editorTodos === item" 
                        class="edit" 
                        type="text" 
                        v-model = "item.title"
                        @blur="editorTodoed(item)"
                        @keyup.13="edtorTodoed(item)"
                        @keyup.esc="cancelTodo(item)"
                    />
                </li>
            </ul>
        </div>
    </div>
    <script src="app.js"></script>
</body>
</html>

index.css：

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: #269B49;
}

.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: #22B14C;

}

.action a:nth-child(3){
    margin-right: 0;
}

.active {
    border: 2px solid #C9C9C9;
    border-radius: 10px;
    font-weight: 800;
}

.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;
    color:#22B14C;
    border-bottom: 1px dotted #22B14C;
}

.todo-list li:hover {
    background-color: #FCF8F8;
}


.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:  #CCCCCC;
    text-decoration: line-through;
}
.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;
}

app.js：

//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)) || []
	}
};

//取出所有的值
var list = store.fetch("Peri He");
//过滤的时候有三种情况，all,finished,unfinished
var filter = {
	all:function(list){
		return list;
	},
	unfinished:function(){
		return list.filter(function(item){
			return !item.isChecked;
		})
	},
	finished:function(){
		return list.filter(function(item){
			return item.isChecked;
		})
	}
}

var vm = new Vue({
	el:".main",
	data:{
		list:list,
		todo:'',
		editorTodos:'' ,//记录正在编辑的数据
		beforeTitle:'' ,//记录正在编辑的数据的title
		visibility:"all" //通过这个值的变化对数据进行筛选
	},
	watch:{  //监控list这个属性，当这个属性对应的值发生改变时执行函数
		// list:function(){
		// 	store.save("Peri He",this.list);
		// }

		list:{   //深度监控！
			handle:function(){
				store.save("Peri He",this.list);
				deep:true
			}
		}
	},
	computed:{
		nocheckLength: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，没有就返回所有数据
			return filter[this.visibility]?filter[this.visibility](list):list;
		}
	},
	methods:{
		//添加任务
		addTodo(ev){ //函数简写的方式，es6
			this.list.push({  //事件处理函数中的this指向的是当前这个根实例
				title:this.todo,
				isChecked:false
			});   

			this.todo = ''; //添加成功后清空输入框
		},
		//删除任务
		deleteTodo(todo){
			var index = this.list.indexOf(todo);
			this.list.splice(index,1);
		},
		//编辑任务
		editorTodo(todo){ 
			//编辑任务的时候记录一下这条任务的title,方便在取消编辑的时候重新复制回来
			this.beforeTitle = todo.title;
			this.editorTodos = todo;
		},
		//编辑完成
		editorTodoed(todo){
			this.editorTodos = "";
		},
		//取消编辑
		cancelTodo(todo){
			todo.title = this.beforeTitle;
			this.beforeTitle = '';
			//让div显示，input隐藏
			this.editorTodos = '';
		}
	},
	directives:{
		"focus":{
			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);

posted @ 2017-11-21 20:03 PeriHe 阅读(769) 评论(0) 编辑收藏举报

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PeriHe

Vue—制作一个todoList

我们将制作这样一个任务计划列表：

功能分析：

附：todoList代码

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