<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<h2>总价格：{{totalPrice}}</h2>
</div>
<script src="../js/vue.js"></script>
<script>
const app = new Vue({
el: '#app',
data: {
books: [
{id: 110,name: 'Unix编程',price: 119},
{id: 111,name: '代码大全',price: 120},
{id: 112,name: '深入理解计算机原理',price: 88},
{id: 113,name: '现代操作系统',price: 99},
]
},
computed: {
totalPrice: function () {
let result = 0;
for (let i=0;i<this.books.length;i++){
result += this.books[i].price
}
return result
// for (let i in this.books) {
// this.books[i]
// }
//
// for (let book of this.books) {
//
// }
}
}
})
</script>
</body>
</html>
