Can I check if host page for a JavaScript is active by the browser's tab in IE7/FF/Opera?

Checking other tabs than the page where this JS runs would probably be a security risk though..

My other option is a method I remember by prototype to check if the mouse cursor is active, but it's not that accurate.

Can I check if host page for a JavaScript is active by the browser's tab in IE7/FF/Opera?

Checking other tabs than the page where this JS runs would probably be a security risk though..

My other option is a method I remember by prototype to check if the mouse cursor is active, but it's not that accurate.

• javascript
• browser
• webbrowser-control

Share Improve this question Follow asked Feb 4, 2009 at 16:21 olemariusolemarius 1,13444 gold badges1717 silver badges2727 bronze badges 2

• If it works for him, why wait? :-) – ceejayoz Commented Feb 4, 2009 at 18:04
• mainly wait as the guy who answered provided an answer to a different question. in this case, an accept was granted for saying what was said in the question. someone else can prove that wrong later, as happened in this case. – geowa4 Commented Feb 4, 2009 at 19:05

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Sorted by: Reset to default 7

You can attach the onBlur and onFocus events to the window; that will tell you if you have focus or not. I have tested this and it works. You cannot check another page, but you can definitely check your own.