通过Firebase数据库将实时数据显示到网页上
[英]Display real-time data to a web page through Firebase Database
问题描述
I am using Firebase Realtime Database to store some data and i also have a website that is showing/changing an image src according to a data change. 
我正在使用Firebase Realtime数据库存储一些数据，并且我还有一个网站根据数据更改显示/更改图像src。
I have written a javascipt that is changing the html image source whenever a data is triggered from Firebase but i would like that to work at the backend. 我已经编写了一个javascipt，每当从Firebase触发数据时，它都会更改html图像源，但是我希望它可以在后端工作。 I want that image to change even if no one visits the site. 我希望即使没有人访问该站点，该图像也要更改。 How can i do that? 我怎样才能做到这一点？
1 个解决方案
解决方案1
0 2018-03-17 12:27:55
You will need to preserve on a state. 您将需要保留一个状态。
For example, create some database that saved on every user his current "step", and your frontend app will query this database. 例如，创建一个数据库，该数据库保存在每个用户的当前“步骤”上，您的前端应用程序将查询该数据库。
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