Firefox API检查选项卡是否处于活动状态
[英]Firefox API to check if the tab is active
问题描述
I recall there was a functionality announced for some of recent Firefox releases that lets the developer to check if the tab is active or not with JavaScript but I can't find it now on the web. 
我记得最近发布的一些Firefox版本宣布了一项功能，该功能使开发人员可以使用JavaScript检查该选项卡是否处于活动状态，但现在我无法在网络上找到它。 Could you please give me the link to the page with more information about it? 您能给我链接到该页面的更多信息吗？ I know I can check it more or less properly with focus/blur but want to try that FF feature out. 我知道我可以或多或少正确地检查焦点/模糊，但想尝试一下FF功能。
1 个解决方案
解决方案1
0 已采纳 2012-03-19 02:52:49
https://developer.mozilla.org/en/DOM/Using_the_Page_Visibility_API though note that this is about tabs being hidden not active . https://developer.mozilla.org/en/DOM/Using_the_Page_Visibility_API但请注意，这是关于标签被隐藏不活动 。 The difference matters for visible tabs in inactive windows. 区别在于非活动窗口中的可见选项卡。
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