<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>vue</title>
</head>
<style type="text/css">
*{list-style: none;}
table,tr,td,th{border: 1px solid #000;border-collapse: collapse;}
</style>
<body>
<div id="app">
<table>
<thead>
<tr>
<th>序号</th>
<th>书名</th>
<th>单价</th>
<th>数量</th>
<th>合计</th>
</tr>
</thead>
<tbody>
<tr v-for = "(book,index) in goods">
<td>{{index}}</td>
<td>{{book.name}}</td>
<td>{{book.price}}</td>
<td><button @click="minus(index)" :disabled = "book.number===1" >-</button>{{book.number}}<button @click="add(index)">+</button></td>
<td>{{book.price*book.number}}</td>
</tr>
</tbody>
</table>
<p>总价：{{total}}</p>
</div>
<script type="text/javascript" src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script type="text/javascript">
var app = new Vue({
el:'#app',
data:{
goods:[
{name:"vue.js实战",price:80,number:1},
{name:"vue.js权威指南",price:60,number:3},
{name:"vue.js2.0渐进式前端解决方案",price:50,number:2}
]
},
methods:{
minus :function(index){
this.goods[index].number--;
},
add:function(index){
this.goods[index].number++;
}
},
computed:{
total:function(){
var arr = this.goods;
var total = 0;
for(var i = 0;i<arr.length;i++){
total += arr[i].price*arr[i].number;
}
return total;
}
}
});
</script>
</body>
</html>
效果如下图：
