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[IMWeb训练营作业]vue实现简单的todo list

2017-04-19 21:15 639 查看

运行效果图：

HTML：

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" href="index.css">
</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=" [IMWeb训练营作业]回车即可添加任务"
class="task-input"
type="text"
v-model="todo"
@keyup.13="addTodo"
/>
<ul class="task-count" v-show="list.length">
<li>{{noCheckedLength}}个任务未完成</li>
<li class="action">
<a href="#all" :class={active:undo==1} @click="choose(1)">所有任务</a>
<a href="#unfinished" :class={active:undo==2} @click="choose(2)">未完成的任务</a>
<a href="#finished" :class={active:undo==3} @click="choose(3)">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 == true,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>
<script src="./vue.js"></script>
<script src="app.js"></script>
</body>
</html>

JS：

var list = [
{
title:"学习",
isChecked:false //状态为false，为不选中  任务未完成
},
{
title:"剁手",
isChecked:true  //状态为true，为选中    任务完成
},
{
title:"运动",
isChecked:false
}
];

var filter = {                  //定义filter对象
all:function(list){
return list
},
finished:function(list){
return list.filter(function(item){
return item.isChecked;
})
},
unfinished:function(list){
return list.filter(function(item){
return !item.isChecked;
})
}
}

var vm = new Vue({
el:".main",
data:{
list:list,
todo:'',
edtorTodos:'',
beforeTitle:'',
undo:1, //默认选中1，所有任务,
visibility:"all"
},
computed:{                     //计算属性
noCheckedLength:function(){
return  this.list.filter(function(item){
return !item.isChecked}).length
},
filteredList:function(){
return filter[this.visibility]?filter[this.visibility](list):list;  //注意此处调用
}
},
methods:{
addTodo(ev){
if(this.todo=='') return; //为空返回
this.list.push({
title:this.todo,
isChecked:false
});
this.todo='';
},
deleteTodo(item){
var index = this.list.indexOf(item);
this.list.splice(index,1)
},
edtorTodo(item){
console.log(item);
this.beforeTitle = item.title;
this.edtorTodos=item;

},
edtorTodoed(item){
this.edtorTodos='';

},
cancelTodo(todo){
todo.title = this.beforeTitle;
this.edtorTodos='';
},
choose(num){
this.undo=num;
}
},
directives:{ //directives与methods平级
"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)

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