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firefox - Object window left over in a javascript bookmark - Stack Overflow

programmeradmin2025-03-121浏览0评论

Currently I'm using the following as a bookmark in Firefox 3.6.3. It redirects me to the RFC just fine, but the active tab says [object Window]. What do I need to do to get rid of that artifact?

javascript:var rfc=prompt("RFC Number");window.open("" + rfc + ".txt")

Currently I'm using the following as a bookmark in Firefox 3.6.3. It redirects me to the RFC just fine, but the active tab says [object Window]. What do I need to do to get rid of that artifact?

javascript:var rfc=prompt("RFC Number");window.open("http://ietf/rfc/rfc" + rfc + ".txt")

Share Improve this question asked May 5, 2010 at 15:11 ElectricWeasel 1077 bronze badges

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2 Answers 2

Sorted by: Reset to default 10

Use the void operator to discard the return value.

javascript:void(window.open("http://ietf/rfc/rfc"+prompt("RFC Number")+".txt"));

You can use also an auto-invoking anonymous function:

javascript:(function(){var rfc=prompt("RFC Number");window.open("http://ietf/rfc/rfc" + rfc + ".txt");})();

Since it doesn't have a return value, by default will return undefined, preventing the navigation.

It will work and your bookmarklet won't introduce any global variables on the page.

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