在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>

<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>

</div>

<script>
var app = angular.module('myApp', []);
app.controller('costCtrl', function($scope) {
    $scope.quantity = 1;
    $scope.price = 9.99;
});
</script>

</body>
</html>
源代码

动行结果
