一、完成todolist案例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>todolist</title>
<script src="/vue/vue.js"></script>
<style type="text/css">
.list_con{
600px;
margin:50px auto 0;
}
.inputtxt{
550px;
height:30px;
border:1px solid #ccc;
padding:0px;
text-indent:10px;
}
.inputbtn{
40px;
height:32px;
padding:0px;
border:1px solid #ccc;
}
.list{
margin:0;
padding:0;
list-style:none;
margin-top:20px;
}
.list li{
height:40px;
line-height:40px;
border-bottom:1px solid #ccc;
}
.list li span{
float:left;
}
.list li a{
float:right;
text-decoration:none;
margin:0 10px;
}
.jishu{
background-color: blue;
}
.oushu{
background-color: orange;
}
</style>
</head>
<body>
<div class="list_con">
<h2>To do list</h2>
<input type="text" v-model="msg" id="txt1" class="inputtxt">
<input type="button" @click="add" value="增加" id="btn1" class="inputbtn">
<ul id="list" class="list">
<!-- <!– javascript:; # 阻止a标签跳转 –>-->
<!-- <li>-->
<!-- <span>学习html</span>-->
<!-- <a href="javascript:;" class="up"> ↑ </a>-->
<!-- <a href="javascript:;" class="down"> ↓ </a>-->
<!-- <a href="javascript:;" class="del">删除</a>-->
<!-- </li>-->
<!-- <li><span>学习css</span><a href="javascript:;" class="up"> ↑ </a><a href="javascript:;" class="down"> ↓ </a><a href="javascript:;" class="del">删除</a></li>-->
<!-- <li><span>学习javascript</span><a href="javascript:;" class="up"> ↑ </a><a href="javascript:;" class="down"> ↓ </a><a href="javascript:;" class="del">删除</a></li>-->
<li v-for="li,index in li_list" :class="index%2==0?'jishu':'oushu'">
<span>{{li}}</span>
<a @click="up(index)" >↑</a>
<a @click="down(index)">↓</a>
<a @click="del(index)">删除</a>
</li>
</ul>
</div>
<script>
let vm = new Vue({
el:'.list_con',
data:{
msg:'',
li_list : ['学习html','学习css','学习python']
},
methods:{
add(){
if(this.msg==""){
return false;
}
this.li_list.push(this.msg);
this.msg='';
},
up(index){
if(index==0){
return false;
}
// 这里删除得到的是一个数组，因为可能删除多个
let message = this.li_list.splice(index,1)
this.li_list.splice(index-1,0,message[0])
},
down(index){
if(index==this.li_list.length){
return false;
}
let message = this.li_list.splice(index,1)
this.li_list.splice(index+1,0,message[0])
},
del(index){
this.li_list.splice(index,1)
}
}
})
</script>
</body>
</html>
二、商品页面
完成商品的增删改，取消添加或修改的话原本input框里的值也要清除
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
<script src="/vue/vue.js"></script>
</head>
<style>
.box{
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
background-color:lightblue;
400px;
height: 320px;
padding: 40px 80px;
}
.display{
display: none;
}
</style>
<body>
<div id="app">
<table class="table table-hover">
<thead>
<tr>
<th>id</th>
<th>名称</th>
<th>数量</th>
<th>价格</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr v-for="good,ind in goods_list">
<td>{{ind+1}}</td>
<td>{{good.name}}</td>
<td>{{good.price}}</td>
<td>{{good.count}}</td>
<td><button class="btn btn-success" @click="type=false,index=ind">编辑</button>
<button class="btn btn-danger" @click="del(index)">删除</button></td>
</tr>
</tbody>
</table>
<button class="btn btn-info" @click="type=false">添加商品</button>
<div :class="{box:true,display:type}">
商品标题: <input type="text" v-model="name"><br><br>
商品价格: <input type="text" v-model="price"><br><br>
商品数量: <input type="text" v-model="count"><br><br>
<button @click="add">保存</button>
<button @click="clear(),type=true">取消</button>
</div>
</div>
<script>
let vm = new Vue({
el:'#app',
data:{
type:true,
index:'',
name:'',
price:'',
count:'',
goods_list:[
{'name':'python入门','price':20,'count':10},
{'name':'python进阶','price':22,'count':33},
{'name':'python入土','price':123123,'count':1213},
]
},
methods:{
del(index){
this.goods_list.splice(index,1)
},
add(){
console.log(this.index)
if(this.index == ''){
// 如果index是空则是追加，非空为修改
this.goods_list.push({'name':this.name,'price':this.price,'count':this.count})
}else {
this.goods_list.splice(this.index,1)
this.goods_list.splice(this.index,0,{'name':this.name,'price':this.price,'count':this.count})
}
this.index=''
this.name=''
this.price=''
this.count=''
console.log(this.index)
},
clear(){
console.log(123)
this.index=''
this.name=''
this.price=''
this.count=''
}
}
})
</script>
</body>
</html>