body部分：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body>
<div class="container">
<table class="table table-bordered text-center">
<thead>
<tr>
<th class="text-center">编号</th>
<th class="text-center">名称</th>
<th class="text-center">单价</th>
<th class="text-center">数量</th>
<th class="text-center">总价</th>
</tr>
</thead>
<tbody>
<tr v-for='(value,index) in lhf'>
<td>{{index+1}}</td>
<td>{{value.name}}</td>
<td>{{value.price}}</td>
<td>
<button @click="lgy(index)">+</button>
<span>{{value.count}}</span>
<button @click="lbx(index)">-</button>
</td>
<td>{{value.count*value.price}}</td>
</tr>
<tr>
<td colspan="5" class="text-center">总计:{{total}}</td>
</tr>
</tbody>
</table>
</div>
js部分：
<script src="js/vue.js"></script>
<script>
new Vue({
el:'.container',
data:{
lhf:[
{name:'bannana',price:'3',count:'3',sub:'9'},
{name:'apple',price:'4',count:'4',sub:'16'},
{name:'pear',price:'5',count:'5',sub:'25'}
],
total:0
},
methods:{
lgy:function(index){
this.lhf[index].count++,
this.lhf[index].sub=(this.lhf[index].price*this.lhf[index].count).toFixed(2)
this.getTotal()
},
lbx:function(index){
if(this.lhf[index].count>1){
this.lhf[index].count--,
this.lhf[index].sub=(this.lhf[index].price*this.lhf[index].count).toFixed(2)
}
this.getTotal()
},
getTotal:function(){
var len=this.lhf.length
var sum= 0;
for(var i=0;i<len;i++){
sum+=Number(this.lhf[i].sub)
}
this.total=sum.toFixed(2);
}
}
})
</script>
</body>
</html>
