功能：
- 删除
- 单选 全选
- 增加数量 减少数量
- 计算总价 计算数量
- 搜索
<!DOCTYPE html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="./js/vue.js"></script>
</head>
<body>
<div id="app">
筛选：<input type="text" v-model="key">
<table border="1" cellspacing="0" cellpadding="10">
<tr>
<th>
<input type="checkbox" v-model="all" @change="checkAll()" >
</th>
<th>id</th>
<th>书籍名称</th>
<th>出版日期</th>
<th>购买价格</th>
<th>数量</th>
<th>操作</th>
</tr>
<tr v-for="(item,index) in flist" :key="item.id">
<td style="text-align: center;"><input type="checkbox" v-model="item.sel" ></td>
<td>{{item.id}}</td>
<td>{{item.name}}</td>
<td>{{item.time}}</td>
<td>{{item.price|prices}}</td>
<td><button @click="item.num--" :disabled="item.num==1">-</button>{{item.num}}<button @click="item.num++">+</button></td>
<td><button @click="delItem(item.id)">移除</button></td>
</tr>
<tr><td colspan="7">总价格:{{total.price|prices}} 选择数量:{{total.num}}</td></tr>
</table>
</div>
<script>
var vm = new Vue({
el:"#app",
data:{
key:"",
all:true,
list:[
{id:1,name:"小红书",time:"2018-8",price:188.99,num:1,sel:true},
{id:2,name:"小烂熟",time:"2019-8",price:88.9,num:1,sel:true},
{id:3,name:"小绿树",time:"2017-5",price:133.00,num:1,sel:true},
{id:4,name:"发生的树",time:"2020-1",price:68.80,num:1,sel:true},
{id:5,name:"奥古",time:"2015-4",price:555.50,num:1,sel:true },
]
},
methods:{
delItem(item){
var falg=window.confirm("确定要删除吗？");
if(falg){
this.list.splice(item-1,1)
}
},
checkAll(){
this.list.forEach(item=>item.sel=this.all)
}
},
watch:{
list:{
handler:function(){
this.all=this.list.every(item=>item.sel)
},
deep:true
}
},
computed:{
total:function(){
var price=0;
var num=0;
this.list.forEach(item=>{
if(item.sel){
price+=item.num*item.price
num+=item.num*1
}
})
return ({price,num})
},
flist:function(){
if(this.key===''){return this.list}
return this.list.filter(item=>item.name.includes(this.key))
}
},
filters:{
prices:function(val,fix=2){
val=val.toFixed(fix)
val=""+val
return "￥"+val
}
},
})
</script>
</body>
</html>
