【IMWeb训练营作业】用Vue做任务列表To do list

来源：互联网发布：淘宝代购only是正品吗编辑：程序博客网时间：2024/05/20 16:43

效果：

以下是html代码：

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>ToDoList</title><link rel="stylesheet" type="text/css" 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 type="text" 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" //根据表单控件的不同去监控不同的value值 v-on:keyup.enter="addTodo"/><ul class="task-content" v-show="list.length"><li>{{noCheckedItem}}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-bind:class="{completed: item.isChecked,editing:item === edtorTodos}" v-for="item in filteredList"><!-- 渲染列表 --><!-- 由item in list改为filteredList --><div class="view"><input type="checkbox" class="toggle" v-model="item.isChecked"><label @dblclick = "edtorTodo(item)">{{item.title}}</label><button class="destroy" @click="deleteTodo(item)"></button></div><inputv-foucs="item === edtorTodos"type="text" class="edit" v-model="item.title"@blur="edtorTodoed(item)"@keyup.enter = "edtorTodoed(item)"@keyup.esc = "cancelTodo(item)"/></li></ul></div></div><script src="app.js"></script></body></html>

以下是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: '×';}.todo-list li:hover .destroy {    display: block;}.todo-list li .edit {    display: none;}.todo-list li.editing:last-child {    margin-bottom: -1px;}

以下是Vue代码：

//存取localStorage中的数据（通过封装一个方法）var store = {save(key,value){localStorage.setItem(key,JSON.stringify(value));},fetch(key){return JSON.parse(localStorage.getItem(key)) || [];}}//数据//去除所有的值var list = store.fetch("todolist-class");//从缓存中调用数据/*var list = [{title:"吃饭打豆豆",isChecked:false //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}];*///vmvar 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titlevisibility:"all"//通过这个属性值的变化，结合hash对数据进行筛选，默认值是all},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("todolist-class",this.list);//浅监控，监控不到list里面各个对象中属性的变化}*/list:{//这里list是个对象handler:function(){store.save("todolist-class",this.list);},deep:true //深度监控}},computed:{noCheckedItem:function(){return this.list.filter(function(item){return item.isChecked === false;}).length;},filteredList:function(){//根据vm的visibility属性来过滤数据//按三种情况过滤：all,finished,unfinishedvar filter = {all:function(){return list;},finished:function(){return list.filter(function(item){return item.isChecked;})},unfinished:function(){return list.filter(function(item){return !item.isChecked;})}}//end filter//考虑到手工改动url栏里hash值的情况，这里加入了判断：找到了过滤函数，就返回过滤后的数据，否则返回所有的数据return filter[this.visibility] ? filter[this.visibility](list) : list;//这里写上(list)才能返回根据数据筛选的值}},methods:{addTodo(){//添加任务/*{title:}*/this.list.push({//往数组里添加任务，格式是个对象title:this.todo,//事件处理函数中的this指向的是，当前这个根实例，即new VueisChecked: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//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还能用到原来的title，写在数据中：beforeTitlethis.beforeTitle = todo.title;this.edtorTodos = todo;},edtorTodoed(todo){//编辑完成后失去焦点this.edtorTodos = '';},cancelTodo(todo){//取消编辑todo.title = this.beforeTitle;this.edtorTodoed(todo);this.beforeTitle = '';//之前记录的值已经没用了，重新设为空}},//end methodsdirectives:{//自定义指令"foucs":{update(el,binding){//钩子函数//console.log(el);//console.log(binding);if(binding.value){el.focus();}}}//end focus}//end directives});function watchHashChange(){var hash = window.location.hash.slice(1);//去掉#号vm.visibility = hash;//拿到去了#的hash值后改变实例的visibility属性值}watchHashChange();//一开始调用一下window.addEventListener("hashchange",watchHashChange);//hash改变时调用一下

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