Detect change of browser tabs with javascript

问题:

is there some way of detecting using javascript that a user has switched to a different tab in the same browser window.

Additionally is there a way to detect a user has switched to a different window than the browser?

thank you

回答1:

Trap the window.onblur event.

It's raised whenever the current window (or tab) loses focus.

回答2:

Most probably there is no standards javascript for this. Some browsers might support it but normally there is only a window.onblur event to find out the user has gone away from the current window.

回答3:

The Page Visibility API was designed to do this. Have a read at this URL:

https://developer.mozilla.org/en-US/docs/Web/Guide/User_experience/Using_the_Page_Visibility_API