尝试使用应该保存到本地存储的切换设置来创建应用程序,但它没有太多运气。
我正在使用Ionic + Angular.JS
这是我的代码,我收到错误Uncaught TypeError:无法分配给只读属性
Controller.js:
.controller("ExampleController", ['$scope', '$window', function($scope, $window) {
$scope.CONFIG = localStorage.getItem('CONFIG');
if (!$scope.CONFIG) {
$scope.CONFIG = {karton: true};
}
$scope.save = function(checked) {
$scope.CONFIG.karton = checked;
localStorage.setItem('CONFIG', $scope.CONFIG);
}
}]);
HTML文件:
<div class="item item-avatar item-icon-right">
<img src="img/box.jpg">
<ion-toggle type="checkbox" ng-model="karton.checked" ng-change="save(karton.checked)" ng-init="karton.checked = CONFIG.karton" toggle-class="toggle-balanced" id="karton" name="karton">Karton</ion-toggle>
<div>Box Value: <span class="val">{{karton }}</span></div>
</div>
修改
我现在有了这个,但它在控制台日志中返回“undefined”:
.controller("ExampleController", ['$scope', '$window', function($scope, $window) {
$scope.CONFIG = (localStorage.getItem('CONFIG'));
if (!$scope.CONFIG) {
$scope.CONFIG = {karton: true};
}
$scope.save = function(checked) {
JSON.stringify($scope.CONFIG.karton) === checked;
localStorage.setItem('CONFIG', JSON.stringify($scope.CONFIG));
console.log(JSON.stringify($scope.CONFIG.karton));
}
}]);
答案 0 :(得分:2)
$ scope.CONFIG的值是一个对象,localStorage只支持字符串。使用JSON.stringify()和JSON.parse()。
.controller("ExampleController", ['$scope', '$window', function($scope, $window) {
$scope.CONFIG = JSON.parse(localStorage.getItem('CONFIG'));
if (!$scope.CONFIG) {
$scope.CONFIG = {karton: true};
}
$scope.save = function(checked) {
$scope.CONFIG.karton = checked;
localStorage.setItem('CONFIG', JSON.stringify($scope.CONFIG));
}
}]);