When turn on the App Tabs?

I checked the 'what are App Tabs?' and read the following descriptions:

App Tabs will inform you with a blue highlight when they change.

  • If you have Gmail as a tab App, for example, and you use a different tab when a new message is received, your Gmail tab lights.

I wonder the meaning of 'change' because after I pinned Weibo.com(largest in China's twitter-like site) as a tab App, new messages will not tab look different. So I would like to know if there is an API to do the job, or it's just the service customized for Web sites limited only by Firefox itself. Thank you!

Quite simply, the blue highlight is caused by a change in title.
It was a fix implemented in response to the bug "App Tabs should indicate the change in status in < title >".

For evidence of the above, enter the code here JavaScript in the address bar and press ENTER.
The App tab will then turn blue whenever it loses focus, until it is then regenerated.

Brief explanation:
The code adds an event listener to change the title of a random number whenever the tab is changed (ie. a blur of the event). The empty container sets the return value to the undefined, so the content of the document is not changed (it would be otherwise).
JavaScript is a scripting language client (user-end) that may alter the HTML (Web site) for the duration of a single page-side (that is to say until a new page is loaded / the same page is reloaded) and is integrated in all popular browsers, as well as the ability to access through the ' javascript: ' Protocol address.

In the case of weibo.com, you would do well to have a look at the extension greasemonkey for firefox, and either create your own script or to persuade a friendly JavaScript coder to make one for you, that changes the title whenever a new message is received.

Tags: Firefox

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