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I visit a page which uses the javascript alert function for a particular functionality. Each time this alert pops up, Firefox puts a conspicuous box to prevent the site from alerting ever again. Well, on one of the many alerts, I accidentally clicked this box. Now the site is non-functional. How do I re-enable alerts for that site?

1 Answer 1

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To re-allow alerts in the Firefox website:

  • Enter the website

  • Show website info:

    • If the menu is enabled, click Tools > Page Info
    • If the menu is disabled, press Ctrl+I
  • Click Permissions

  • Next to the "Open pop-up windows" permission, uncheck "Use Default"

  • Click Allow

  • Restart Firefox (for me it didn't work without it).

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  • I believe the restart in and of itself would allow alerts. The "Open pop-up windows" is unrelated and allows sites to use window.open().
    – ethry
    Dec 29, 2023 at 4:54

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