<!DOCTYPE html>
<html>
<head>
<Meta charset="utf-8">
<Meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<link rel="stylesheet" href="">
</head>
<body>
<div ng-app="myApp" ng-controller="costCtrl">
<input type="number" ng-model="quantity">
<input type="number" ng-model="price">
<p>总价:{{(quantity * price) | currency}}</p>
</div>
</body>
<script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
<script>
var app = angular.module("myApp",[]);
app.controller("costCtrl",function($scope){
$scope.quantity = 1;
$scope.price = 9.99;
});
</script>
</html>
