<!DOCTYPE html>
<html lang="zh">
<head>
<title></title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<link href="../css/style.css" rel="stylesheet"> </head>
<body>
<div id="myApp">
<p>今年3月3日发卖的任天堂新一代主机Switch的价格是：{{price}}円，含税价格为：{{priceInTax}}円，折合人民币为：{{priceChinaRMB}}元。</p>
<button @click="btnClick(10000)">加价10000円</button>
</div>
<script>
var myApp = new Vue({
el: '#myApp',
data: {
price: 0,
priceInTax: 0,
priceChinaRMB: 0,
},
watch: {
price: function(newVal, oldVal){
console.log(newVal, oldVal);
this.priceInTax = Math.round(this.price * 1.08);
this.priceChinaRMB = Math.round(this.priceInTax / 16.75);
},
},
methods: {
btnClick: function(newPrice){
this.price += newPrice;
},
},
});
myApp.price = 29980;
</script>
</body>
</html>
