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Editorial Team
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Asked: 2026-05-30T15:23:25+00:00

I am trying to write an extension that will cache page content for offline

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I am trying to write an extension that will cache page content for offline reading. If the user activates the extension’s popup while offline, I would like to show the cached content. Currently, I am thinking I can make an ajax request and wait to see if it fails, but if there is a part of the chrome API that would let me do this more quickly, that would be ideal.

I have done some googling and haven’t come across anything.

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1 Answer

  1. Editorial Team
    if (navigator.onLine) {
  // Online
} else {
  // Offline
}

    It also supports event listeners.

    https://developer.mozilla.org/en/Online_and_offline_events

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