<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<h2>总价格: {{totalPrice}}</h2>
<h2>总价格: {{getTotalPrice()}}</h2>
</div>
<script>
const app = new Vue({
el: '#app',
data: {
books: [
{id: 110, name: 'Unix编程艺术', price: 119},
{id: 111, name: '代码大全', price: 105},
{id: 112, name: '深入理解计算机原理', price: 98},
{id: 113, name: '现代操作系统', price: 87},
]
},
methods: {
getTotalPrice: function () {
let result = 0
for (let i=0; i < this.books.length; i++) {
result += this.books[i].price
}
return result
}
},
computed: {
totalPrice: function () {
let result = 0
for (let i=0; i < this.books.length; i++) {
result += this.books[i].price
}
return result
}
}
})
</script>
</body>
</html>
