Uncaught Error SECURITY ERR DOM Exception 18 when I try to set a cookie

Question

I get the following error in Chrome s developer tools window when I try to set a cookie using this jQuery plugin      Uncaught Error  SECURITY ERR  DOM Exception 18   What does this error mean and how can I fix it  I get the same error when I use this jQuery plugin

User · Answer

You can also  fix  this by replacing the image with its inline Base64 representation  img src   data image gif base64 R0lGODlhCwALAIAAAAAA3pn ZiH5BAEAAAEALAAAAAALAAsAAAIUhA hkcuO4lmNVindo7qyrIXiGBYAOw      Useful  when you do not intend to publish the page on the web  but instead use it on local machines only

User · Answer

You re most likely using this on a local file over the file    URI scheme  which cannot have cookies set  Put it on a local server so you can use http   localhost

User · Answer

This error pops up  if you try to create a web worker with data URI scheme   var w   new Worker  data text javascript charset utf-8 onmessage 20 3D 20function   20 7B 20postMessage  22pong 22  3B 20 7D    w postMessage  ping      It s not allowed according to the standard  http   www whatwg org specs web-apps current-work multipage workers html dom-worker

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I wasn t completely happy by the --allow-file-access-from-files solution  because I m using Chrome as my primary browser  and wasn t really happy with this breach I was opening   Now I m using Canary   the chrome beta version   for my development with the flag on  And the mere Chrome version for my real blogging   the two browser don t share the flag

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One can also receive this error if using the new  so far webkit only  notification feature before getting permission   First run    lt  -- Get permission -- gt   lt button onclick  webkitNotifications requestPermission     gt Enable Notifications lt  button gt    Later run      Display Notification  window webkitNotifications createNotification  image    Title    Body   show      The request permission functions needs to be triggered from an event caused by the user  otherwise it won t be displayed

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I was been getting that error in mobile safari when using ASP NET MVC to return a FileResult with the overload that returns a file with a different file name than the original  So   return File returnFilePath  contentType  fileName     would give the error in mobile safari  where as  return File returnFilePath  contentType     would not   I don t even remember why I thought what I was doing was a good idea  Trying to be clever I guess

User · Answer

I had this issue when using the history API    window history pushState null  null  URL     Even with a local server  localhost   you want to add  http     to your URL so that you have something similar to    http   localhost

User · Answer

I also had this issue while developping on HTML5 in local  I had issues with images and getImageData function  Finally  I discovered one can launch chrome with the --allow-file-access-from-file command switch  that get rid of this protection security  The only thing is that it makes your browser less safe  and you can t have one chrome instance with the flag on and another without the flag

User · Answer

Faced with the same situation playing with Javascript webworkers  Unfortunately Chrome doesn t allow to access javascript workers stored in a local file    One kind of workaround below using a local storage is to running Chrome with --allow-file-access-from-files  with s at the end   but only one instance of Chrome is allowed  which is not too convenient for me  For this reason i m using Chrome Canary  with file access allowed    BTW in Firefox there is no such an issue

[javascript] Uncaught Error: SECURITY_ERR: DOM Exception 18 when I try to set a cookie

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