Mobile Safari/Webkit 窗口焦点事件
我想知道当用户切换回“您的”页面窗口时是否有可能收到事件？当用户打开新选项卡然后切换回页面的选项卡或用户关闭 safari 然后再次打开它时，可能会发生这种情况。
我希望能够在收到此事件后更新页面上的内容。我现在使用 setInterval 来完成此操作，但是当用户专注于您的窗口时最好没有延迟。
谢谢！
I am wondering if it is possible to get a event when the user switches back to "your" page's window? This could happen either when the user opens a new tab and then switches back to your page's tab or when the user closes safari and then opens it again.
I want to be able to update content on the page once I get this event. I am using a setInterval to accomplish this now, but it would be nice to not have the delay when the user focuses on your window.
Thanks!
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这个问题得到解决的可能性似乎很小：
我创建了 this 脚本来记录尽可能多的 WebKit 事件（事件名称取自 http://svn.webkit.org /repository/webkit/trunk/Source/WebCore/dom/EventNames.h），并且在离开/带到前台 Safari 时似乎不会触发任何事件。
The chance of this one getting resolved seems small:
I created this script to log as many WebKit events as possible (event names taken from http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/dom/EventNames.h), and it doesn't seem to trigger any event upon leaving/bringing to front Safari.
我一直在深入研究，发现再次激活窗口时会触发
focus事件。它应该是可行的（使用 jQuery）：
这个事件可能比需要的更频繁地触发，但它对我有用。
I've been digging around and found that a
focusevent is fired when the window is activated again.It should be doable like this (using jQuery):
This event is probably fired more often than needed, but it worked for me.