我需要按性别对所有年龄段进行总结。所需结果如下:
但是我只能得到所有男性和女性的年龄段的总数,请参阅以下源代码以更详细地了解我想要做什么。
var demoApp = angular.module("demoApp", ["angular.filter"]);
demoApp.controller("MainController", function($scope) {
$scope.users = [{
id: 1,
name: "Mike",
age: 22,
gender: "Male"
}, {
id: 2,
name: "Joe",
age: 28,
gender: "Male"
}, {
id: 3,
name: "David",
age: 30,
gender: "Male"
}, {
id: 4,
name: "Susan",
age: 25,
gender: "Female"
}, {
id: 5,
name: "Marie",
age: 27,
gender: "Female"
}, {
id: 6,
name: "Julie",
age: 33,
gender: "Female"
}];
$scope.sumByGender = function() {
var total = 0;
for (count = 0; count < $scope.users.length; count++) {
total += $scope.users[count].age;
}
return total;
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-filter/0.5.8/angular-filter.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<div ng-app="demoApp" ng-controller="MainController">
<div ng-repeat="(key, value) in users | groupBy: 'gender'">
Gender: {{key}}
<div>
<table class="table table-bordered">
<thead>
<tr>
<td>#</td>
<td>Name</td>
<td>Age</td>
</tr>
</thead>
<tbody>
<tr ng-repeat="user in value">
<td>{{user.id}}</td>
<td>{{user.name}}</td>
<td>{{user.age}}</td>
</tr>
</tbody>
<tbody>
<tr>
<td colspan="2" class="text-right">Total</td>
<td>{{sumByGender()}}</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>