如何在angularjs中创建一个简单的if then else？

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.8.2/angular.min.js"></script>
<script>
    var app = angular.module('myApp', []);
</script>

<div ng-app="myApp" ng-controller="myCtrl">
    <!-- Your code goes here -->
</div>

app.controller('myCtrl', function($scope) {
    $scope.showContent = true; // 控制显示内容的变量
});

<div ng-if="showContent">
    <p>This content is shown if showContent is true.</p>
</div>
<div ng-if="!showContent">
    <p>This content is shown if showContent is false.</p>
</div>