离子角度Js -本地存储阵列

Hello I am developing an Ionic app and I have an array that I want to push items on to it, but not lose the data when I change screens. Also, I do not want to use a database. Is there any other way? to add to an existing array and store that array locally?

你好，我正在开发一个离子应用程序，我有一个数组，我想把项目推到它上面，但当我改变屏幕时不会丢失数据。另外，我不想使用数据库。还有别的办法吗?要添加到现有数组并将该数组存储在本地?

 $scope.tasksCollection = [
    { info: 'Go studying', measured: 'no', total: 1, done: 1, id: 1 },
    { info: 'Go to the beach', measured: 'no', total: 1, done: 1, id: 2},
    { info: 'Run', measured: 'yes', total: 30, done: 15, id: 3}
    ];

 $scope.tasksCollection.push({
        info: $scope.taskInfo,
        measured: $scope.result,
        total: total,
        done: 0,
        id: $scope.tasksCollection.length
    })

The add function is working perfectly I just loose the data when changing states.

add函数工作得很好，我只是在改变状态时释放数据。

2 个解决方案

#1

If you want to keep data between controllers either use a service or local storage if you want to keep the data even when you quit the app.

如果你想在控制器之间保存数据，可以使用服务或本地存储，如果你想保存数据，即使你退出了应用程序。

Service example

Further angular documentation regarding services: https://docs.angularjs.org/guide/services

关于服务的进一步的角度文档:https://docs.angularjs.org/guide/services。

service.js:

service.js:

angular.module('yourmodule.services')
    .service('Tasks', [function () {
        var collection = {
            tasks: []
        };

        return {
            getTasks : function(){ return collection.tasks; }
        }
    }]
);

controller.js

controller.js

angular.module('yourmodule.controllers')
    .controller('TaskCtrl', ['$scope', 'Tasks',
        function($scope, Tasks){

   $scope.Tasks = Tasks //Expose service to template

   $scope.addTask = function(){
      Tasks.getTasks().push({name : 'a new task'});
   }
}]);

Local storage example

This is an excellent library which provides easy localstorage access for angularjs: https://github.com/grevory/angular-local-storage

这是一个优秀的库，为angularjs提供了方便的本地存储访问:https://github.com/grevory/angular-local存储

angular.module('yourmodule.controllers')
        .controller('TaskCtrl', ['$scope', 'localStorageService',
            function($scope, localStorageService){

   $scope.collection = {
       tasks : localStorageService.get('tasks') || [];
   }

   $scope.addTask = function(){
      $scope.collection.tasks.push({name : 'a new task'});
      localStorageService.set('tasks', $scope.collection.tasks);
   }
}]);

#2

How about HTML5's locaStorage?

HTML5的locaStorage怎么样?

See Ionic formulas on Using Local Storage.

参见使用本地存储的离子公式。