Question

我有一个功能，可以在点击时添加/删除新的输入字段。每个领域都有自己的ng-model fam.age。并且函数计算溢价，这取决于年龄。该函数的结果是一个像这样的对象数组：

[
   {
      "id":"fam1",
      "age":2,
      "btaccident":0.79,
      "btdisability":0.13,
      "btdeath":0.18,
      "premium":5
   },
   {
      "id":"fam2",
      "age":3,
      "btaccident":0.79,
      "btdisability":0.13,
      "btdeath":0.18,
      "premium":5
   }
]

对象数量取决于点击添加按钮的次数。

如何在VIEW中获得每个数组对象的“溢价”总和？

我曾尝试过休耕：

$scope.totalFamily = 0;

    $scope.getTotalPremium = function () {
      for (var i=0; i<$scope.familyMembers.length; i++) {
          $scope.totalFamily += $scope.familyMembers[i].premium;
      }  
    };

Answer 1

您可以使用angular.forEach（），

  $scope.sum = function(){
    var total = 0;
     angular.forEach($scope.data,function(key,value){
       total+=key.premium;
     })
    return total;
    }

<强>样本

＆＃13;

var app= angular.module("MyApp", []);

app.controller("MyController", function($scope) {
    $scope.data =  [
   {
      "id":"fam1",
      "age":2,
      "btaccident":0.79,
      "btdisability":0.13,
      "btdeath":0.18,
      "premium":5
   },
   {
      "id":"fam2",
      "age":3,
      "btaccident":0.79,
      "btdisability":0.13,
      "btdeath":0.18,
      "premium":5
   }
];

$scope.sum = function(){
var total = 0;
 angular.forEach($scope.data,function(key,value){
   total+=key.premium;
 })
return total;
}
});

＆＃13;

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="style.css">
    <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
    <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.14/angular.min.js"></script>
    <script src="script.js"></script>
  </head>
  <body ng-app="MyApp" ng-controller="MyController">
    
    <h1> sum is : {{sum()}}</h1>
  </body>
</html>

＆＃13;

Answer 2

如果您没有使用像Underscore或Lodash这样的库，请使用forEach maethod循环浏览对象。

 var obj = [{"id":"fam1","age":2,"btaccident":0.79,"btdisability":0.13,"btdeath":0.18, "premium": 5},{"id":"fam2","age":3,"btaccident":0.79,"btdisability":0.13,"btdeath":0.18, "premium": 5}];
    var sum = 0;

    obj.forEach(function(val){sum = sum+val.premium})

如何获得对象属性的总和

2 个答案: