javascript - AngularJS 中如何从另一个服务调用一个服务？

Question

我正在学习 Angular，我将 LocalStorage 服务定义为:

.service('LocalStorage', function() {
    var self = this;

    this.localStorageAvailable = function() {
        return typeof (Storage) !== "undefined";
    };

    this.set = function(key, value) {
        if (!self.localStorageAvailable()) return;
        localStorage.setItem(key, JSON.stringify(value));
    };

    this.get = function(key, defaultValue) {
        if (!self.localStorageAvailable()) return defaultValue;
        return JSON.parse(localStorage.getItem(key));
    };
})

然后我想创建另一个使用我刚刚定义的 LocalStorage 服务的服务，但它给出了:

error: $LocalStorage is udefined.

.service('FilterSvc', ['LocalStorage', function ($LocalStorage) {
    var self = this;
    var key = "Settings";
    this.LoadSettings = function (universeCode) {
        if ($LocalStorage.get(key, "") === "") {
            ////load setting, otherwise reuse
            var result = "aaa";
            this.set(key, result);
        }
    };
}]);

有人可以帮忙吗？

Answer 1

您应该从变量 $LocalStorage 中删除 $