This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

Can not get cookie after set by using document.cookie on firefox 57

  • 6 biyano
  • 1 eza na nkokoso oyo
  • 25 views
  • Eyano yasuka ya Tam Vo

more options

Hi, I'm writing a web extension and when I opened extension debugging mode through "about debugging".

From console tab, I type "document.cookie = "username=tam;expires=Mon, 23 Feb 2018 17:35:38 GMT;path=/";" and Enter to set cookie. But after set, I type "document.cookie" it return empty string.

And my extension can not set or get cookie from document.cookie

I don't know what happen with cookie that I set.

Hi, I'm writing a web extension and when I opened extension debugging mode through "about debugging". From console tab, I type "document.cookie = "username=tam;expires=Mon, 23 Feb 2018 17:35:38 GMT;path=/";" and Enter to set cookie. But after set, I type "document.cookie" it return empty string. And my extension can not set or get cookie from document.cookie I don't know what happen with cookie that I set.
Bafoto sur écran jointes

Ezalaki modifié na Tam Vo

All Replies (6)

more options

Post your question in the add-ons forum; https://discourse.mozilla-community.org/c/add-ons

more options

I posted on discourse.mozilla.org and hope someone will answer it. Thanks.

more options

Does it work if you leave a space after the colons?

  • document.cookie = "username=tam; expires=Mon, 23 Feb 2018 17:35:38 GMT; path=/";
more options

It's still not working.

more options

I see the username=tam cookie in the Storage Inspector and also in document.cookie.

Make sure you do not run Firefox in permanent Private Browsing mode (Always use Private Browsing mode; Never Remember History) in case that makes a difference.

  • Options/Preferences -> Privacy & Security -> Firefox will: "Use custom settings for history"
  • remove checkmark: [ ] "Always use Private Browsing mode"

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window
more options

I setup with your suggestion. In developer tools for web extension, I can not get cookie after set. On developer tool on web I can set and get it. See attachment below.