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Editorial Team
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Asked: 2026-06-04T07:24:23+00:00

I’m developing an extension for FireFox. I use a XUL deck element that contains

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I’m developing an extension for FireFox. I use a XUL deck element that contains a XUL browser element. Unfortunately, whenever the page displayed in the browser has an HTML title attribute, the value of this title attribute will not show up as a tooltip.

How can I get tooltips to display correctly?

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1 Answer

  1. Editorial Team

    I found the solution for those who are interested, it’s by adding a tooltip property to the XUL browser element with the following value:

    tooltip="aHTMLTooltip"

    Or adding it programmatically using javascript like this:
    browser.setAttribute('tooltip','aHTMLTooltip');

    for more details check: https://bugzilla.mozilla.org/show_bug.cgi?id=451792#c1

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