Is there a way to detect if a browser window is not currently active?

Question

I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it\'d be nice to not run.

Answer 1

In HTML 5 you could also use:

• onpageshow: Script to be run when the window becomes visible
• onpagehide: Script to be run when the window is hidden

See:

• https://developer.mozilla.org/en-US/docs/Web/Events/pageshow
• https://developer.mozilla.org/en-US/docs/Web/Events/pagehide