Question

我的域名非常简单。我有一个Message类和一个MessagesManager类。

Message有3个属性：

author
message（正文）
timestamp

MessagesManager基本上只是一个保存消息历史，添加新消息等的接口。

我想将消息存储在localStorage中，以便以后可以检索它们，但我不知道该怎么做。

class MessagesManager {
    constructor() {
        this.msgs = []; //retrieve from localStorage
    }

    add(author, message) {
        var msg = new Message(author, message)
        this.msgs.push(msg);
    }

    save() {
        // save to localStorage
    }

    delete() {
        this.msgs = [];
    }
}

我的Message：

class Message {
    constructor(author, message) {
        this.timestamp = Date.now();
        this.author = author;
        this.message = message;
    }

    toString() {
        var date = new Date(this.timestamp);

        var hours = date.getHours();
        var minutes = date.getMinutes();
        var seconds = date.getSeconds();

        if (hours < 10) hours = "0" + hours;
        if (minutes < 10) minutes = "0" + minutes;
        if (seconds < 10) seconds = "0" + seconds;

        var time = "[" + [hours, minutes, seconds].join(":") + "]";

        return time + " " + this.author + ": " + this.message;
    }
}

在localStorage中存储消息（作为对象，类型）的最好/最好的方法是什么，同时也能够轻松地检索它们（即在MessagesManager构造函数中）？< / p>

Answer 1

试试这个：

GettingData: function(key1,key2){
  console.log('Getting Data of '+key2);
  var ref = firebase.database().ref('/users/'+key1+'/products/'+key2).orderByKey().equalTo('name');
  ref.on('child_added', function(data) {
    console.log('pushing value' + data.val() + 'to ' + this.databaseresult);
    this.push('databaseresult', data.val());
    console.log('Productdata of '+ key1 +' is LOADED');
  }.bind(this));
},

 <!-- One way binding -->
 <x-element id="results" products="[[databaseresults]]"></x-element>

 <!-- Two way binding -->
 <x-element id="results" products="{{databaseresults}}"></x-element>

}

文档：http://www.w3schools.com/html/html5_webstorage.asp

将对象存储到localStorage

1 个答案: