如何使用Angularjs显示函数的返回值

I'm trying to use Angularjs. How can I show a result of a function in a view?

我正在尝试使用Angularjs。如何在视图中显示函数的结果？

I have a HTML like this.

我有这样的HTML。

<body ng-controller="fooCtrl">
  <p>a: {{ a }}</p>
  <p>b: {{ b }}</p>
</body>

And javascript for it.

和它的javascript。

fooApp.controller('fooCtrl', ['$scope', function ($scope) {
  $scope.a = 3;
  $scope.b = function(){
    return 4;
  };
}]);

a is properly shown, but b is blank. What am I doing wrong?

a正确显示，但b为空白。我究竟做错了什么？

1 个解决方案

b is a function object. To get result you need to actually call it.

b是一个功能对象。要获得结果，您需要实际调用它。

Try

尝试

<p>b: {{ b() }}</p>