代码
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<div>
<label>个数：</label>
<input type="number" v-model="count"/>
<label>单位： 1000 </label>
</div>
<div>单价： {{price}} / 个</div>
<div>总价： {{ count | sum(price, unit)}}</div>
</div>
</body>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script type="text/javascript">
Vue.filter('sum', function(value, price, unit) {
return value * price * unit
})
var vm = new Vue({
el: '#app',
data() {
return {
count: 0,
unit: 1000,
price: 20
}
}
})
</script>
</html>
运行结果