Question

我需要遍历看起来像

的嵌套json数组

[
  {
    "title": "EPAM",
    "technologies": [
        "PHP",
        ".net",
        "Java",
        "Mobile",
        "Objective-C",
        "Python",
        "Ruby"
    ],
    "location": "Belarus",
    "city": "Minsk" 
  },
  {
    "title": "Parallels",
    "technologies": [
        "PHP",
        "Java",
        "C++",
        "iOS Development",
        "C#",
        "Ember.js"
    ],
    "location": "Russia",
    "city": "Moscow" 
  }
]

我想要的是遍历每个公司的技术列表，然后返回唯一值列表。但是，我无法访问控制器中公司阵列中的单个公司。到目前为止看起来像这样

var app = angular.module('app', []);

app.controller('CompaniesController', ['$scope', '$http', 
  function($scope, $http) {
    $http.get('json/companies.json').success(function(data) {
        $scope.companies = data; // get data from json

        $scope.techStack = []

        $scope.companies = data.query(function(companies) {
            console.log(companies); //I expected to see data here
        });
    });

  }
]);

显然我做错了。

Answer 1

对每个角色使用角度

 var app = angular.module('app', []);
    app.controller('CompaniesController', ['$scope', '$http', 
      function($scope, $http) {
        $http.get('json/companies.json').success(function(data) {
            $scope.companies = data; // get data from json
              angular.forEach($scope.companies, function(item){
                   console.log(item.technologies);  
               })
            });
        });

      }
    ]);

Answer 2

如果只需要在UI上显示嵌套数组，则可以在视图中直接显示 e.g。

            <tr ng-repeat="i in Items">
                <td valign="top">{{i.Value}}</td>
                <td valign="top">
                    <table>
                        <tr ng-repeat="c in i.Children">
                            <td>{{c.Value}}</td>
                        </tr>
                    </table>
                </td>
            </tr>

Answer 3

为了在AngularJS中循环遍历数组，您只需使用angular.forEach即可。例如，

angular.forEach(companiesList, function(company) {
    //Here you can access each company.
});

我根据你的代码做了一个简单的演示，列出了＃34;公司＆＃34;和独特的＆＃34;技术＆＃34;。

<强> DEMO

Answer 4

试试这个

var app = angular.module('app', []);

app.controller('CompaniesController', ['$scope', '$http', 
  function($scope, $http) {
    $http.get('json/companies.json').success(function(data) {
        $scope.companies = data; // get data from json

        $scope.techStack = []

        angular.forEach($scope.companies, function(item){
            $scope.techStack = item.technologies;
            var uniqueTech = [];
            for (var i = 0; i < $scope.techStack.length; i++)
            {
                if (uniqueTech.indexOf($scope.techStack[i]) == -1)
                    uniqueTech.push($scope.techStack[i]);
            }   
            console.log("Unique Technologies : " + uniqueTech);

        })
    });

  }
]);

Answer 5

用户角度的foreach函数，用于循环数据。

在角度控制器中迭代嵌套的json数组并获取唯一值

5 个答案: