<script src="/js/angular.js1.4.6/angular.min.js"></script>
<div ng-app="myApp" ng-controller="costCtrl">
数量: <input type="number" ng-model="quantity">
价格: <input type="number" ng-model="price">
<p>总价 = {{ (quantity * price) | currency }}</p>
var app = angular.module('myApp', []);
app.controller('costCtrl', function($scope) {