Javascript的自动更新页面？ [英] Javascript auto update page?

问题描述

任何人都可以给我一个方向，我想知道怎么做，如Facebook自动更新的网页有新的状态更新，新的喜好等即，如果你有这样一个状态的一个窗口，用户点击打开 +1像自动出现。

Can anybody give me a direction, I want to know how to do auto updating pages like facebook have for new status updates, new likes etc. Ie., if you have a status open in a window and a user click "like", the +1 like automatically appears.

在此先感谢。

推荐答案

这些正在使用推模型（订阅/发布）。完成

These are done using a PUSH model (subscribe / publish).

客户端第一次预订发出一个AJAX请求。这AJAX请求保持活着下去。当服务器接收到一个新的像/评论，它发布了此更新的客户端，从而结束了AJAX请求。客户端接收此更新并isntantly发出另一个AJAX请求。

The client side first subscribes by issuing an AJAX request. This AJAX request stays alive indefinitely. When the server receives a new like / comment, it publishes this update to the client side thereby ending the AJAX request. The client receives this update and isntantly issues another AJAX request.

据大致分类彗星。

在之前，我已经实现了一个彗星网络聊天应用程序，并写了什么地方进去一个有些技术性的写了起来。你可以在这里，如果有兴趣阅读。

Once before, I had implemented a Comet web chat application and wrote a somewhat technical write up of what went into it. You can read it here, if interested.

彗星网络聊天应用程序

Comet Web Chat Application

编辑：

一个心跳机制（拉模型）肯定是更容易实现，但推模式更为高效。

A heartbeat mechanism (PULL model) is definitely easier to implement, but a PUSH model is far more efficient.

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