Question

我正在开发一个AngularJS应用程序，使用Parse.com作为后端。

我想要实现的目标：
我有一个存储在数组中的多个答案分数（值），我希望能够在每个数组中添加每个值并显示每个数组的总和。

例如设置1 [1,2,3] = 6点
设置2 [1,1,1,1] = 4分

当前问题：
无论我尝试使用什么样的例子，我似乎都无法实现这一点。

任何帮助/建议都会有所帮助！

控制器JS：

var dashApp = angular.module('dashApp.controllers', ['chart.js']);
dashApp.controller("dashboardCtrl", function($scope, $http, $filter) {
    $scope.parseRecommend = [];
    // Question Answer Array
    $scope.parseQ1P1 = [];
    $scope.parseQ1P2 = [];
    $scope.parseQ2P1 = [];
    $scope.parseQ2P2 = [];
    $scope.parseQ3P1 = [];
    $scope.parseQ4P1 = [];
    $scope.parseQ5P1 = [];
    var hashmap = {};
    $http({
            method: 'GET',
            url: 'https://api.parse.com/1/classes/Customers',
            headers: {
                'X-Parse-Application-Id': 'xxx',
                'X-Parse-REST-API-Key': 'xxx'
            }
        })
        .success(function(data, error) {
            $scope.parseResults = data.results;
            // Widget Data
            angular.forEach($scope.parseResults, function(results) {
                $scope.parseRecommend.push(results.question_4_p1);
                // Get Question Anwsers
                $scope.parseQ1P1.push(results.question_1_p1);
                $scope.parseQ1P2.push(results.question_1_p2);
                $scope.parseQ2P1.push(results.question_2_p1);
                $scope.parseQ2P2.push(results.question_2_p2);
                $scope.parseQ3P1.push(results.question_3_p1);
                $scope.parseQ4P1.push(results.question_4_p1);
                $scope.parseQ5P1.push(results.question_5_p1);
            });
            $scope.parseRecommend.forEach(function(elm) {
                hashmap.hasOwnProperty(elm) ? ++hashmap[elm] : hashmap[elm] = 1
            });
            // Widget One
            var yesAmount = hashmap.yes;
            var noAmount = hashmap.no;
            $scope.widgetone_data = [yesAmount, noAmount];
            $scope.widgetone_label = ["Yes", "No"];
            // Widget Two
            $scope.widgettwo_label = ['Q1', 'Q2', 'Q3', 'Q4', 'Q5', 'Q6', 'Q7', 'Q8', 'Q9', 'Q10'];
            $scope.widgettwo_data = [
                [65, 59, 100, 81, 56, 55, 40, 44, 87, 12],
                [22, 33, 44, 11, 55, 6, 97, 5, 72, 45]
            ];
        })
        .error(function(data, error) {
            alert('Failed, error code: ' + error.message);
        });
});

Answer 1

这里：

var Set1 = [1,2,3],
    Set2 = [1,1,1,1];

$scope.tot1 = Set1.reduce((p,c) => p + c); //6
$scope.tot2 = Set2.reduce((p,c) => p + c); //4

或嵌套在Array中，如下所示：

var Sets = [];
Sets.push(Set1);
Sets.push(Set2);

var result = Sets.map(val => val.reduce((p,c) => p+c));
// result == [6, 4]

PS。如果你想知道p和c代表先前和当前，这里是相关的documentation

Answer 2

您可以在范围内创建一个总计它们的函数：

$scope.set_1 = [1,2,3];
$scope.set_2 = [1,1,1,1];

$scope.totalArray = function(passed_array){
    var total = 0;

    for (var index=0; index<passed_array.length; index++) {
       total += passed_array[index];
    }
    return total;
}

$scope.total_1 = $scope.totalArray($scope.set_1);
$scope.total_2 = $scope.totalArray($scope.set_2);

Answer 3

正如我在你的代码中看到的那样，你想要对数组里面的值和数组进行求和。然后有很多方法。你可以像示例中那样创建一个数组数组你可以看一下我在小提琴里为你做的例子。看看吧。如果有任何不匹配，请回复我会帮助您。

https://www.mozilla.org/en-US/firefox/geolocation/

<div ng-app="app" ng-controller="demoController">
    {{sum}}
</div>

var app= angular.module("app",[]);
app.controller('demoController', ['$scope', 
  function($scope) {
    $scope.sum = 0;
    $scope.widgettwo_data = [
                [65, 59, 100, 81, 56, 55, 40, 44, 87, 12],
                [22, 33, 44, 11, 55, 6, 97, 5, 72, 45]
            ];

      angular.forEach($scope.widgettwo_data,function(arr){
          if(angular.isArray(arr)){
              angular.forEach(arr,function(num){
                $scope.sum += num;
              });               
          }
          else{
            $scope.sum += num;
          }
      });

}]);

Answer 4

我根据@ Akshay的代码做了一些改动。它分别计算单个数组和显示的总和。

Link to JSFiddle

结果

数组0总和：599

数组1总和：390

HTML

 var app= angular.module("app",[]);
 app.controller('demoController', ['$scope', function($scope) {
    $scope.sum = 0;
    $scope.arraySum = [];
    $scope.widgettwo_data = [
                [65, 59, 100, 81, 56, 55, 40, 44, 87, 12],
                [22, 33, 44, 11, 55, 6, 97, 5, 72, 45]
            ];
      angular.forEach($scope.widgettwo_data,function(arr){
          $scope.sum = 0;
          if(angular.isArray(arr)){
              angular.forEach(arr,function(num){
                $scope.sum += num;
              });
              $scope.arraySum.push({
                sum: $scope.sum
              });
          }
          else{
            $scope.sum += num;
            $scope.arraySum.push({
                sum: $scope.sum
            });  
          }
      });
}]);

JS

SELECT
  "defect"."BG_BUG_ID" AS "Defect",
  "defect"."BG_STATUS" AS "Status",
  "defect"."BG_SEVERITY" AS "Severity",
  "defect"."BG_PRIORITY" AS "Priority",
  "defect"."BG_USER_03" AS "Category",
  "defect"."BG_USER_01" AS "Modules",
  "defect"."BG_USER_08" AS "EFD",
  "defect"."BG_USER_02" AS "Region",
  "defect"."BG_SUMMARY" AS "Summary",
  "defect"."BG_DETECTED_BY" AS "Detected By",
  "audit_log"."AU_ACTION" AS "Action",
  "audit_log"."AU_USER" AS "User",
  "audit_property"."AP_OLD_VALUE" AS "Old Value",
  "audit_property"."AP_NEW_VALUE" AS "New Value",
  "audit_log"."AU_TIME" AS "Change Time",
  "audit_property"."AP_PROPERTY_NAME" AS "Change Area"
FROM
  BUG "defect"
  INNER JOIN AUDIT_LOG "audit_log" ON "defect"."BG_BUG_ID" = "audit_log"."AU_ENTITY_ID"
  INNER JOIN AUDIT_PROPERTIES "audit_property" ON "audit_log"."AU_ACTION_ID" = "audit_property"."AP_ACTION_ID"
WHERE
    "audit_log"."AU_ENTITY_TYPE" = 'BUG'

AngularJS计算每个数组的总和

4 个答案:

结果

HTML

JS