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JQuery parallax effect suddenly stop working on certain site.

Posted

Good day! Another day I noted parallax jquery background effect stop working on https://nplus1.ru site (background photos in the middle on pages like https://nplus1.ru/material/2015/11/06/twin-numbers ). I tried clean new Firefox profile (positive result, everything works as expected); restart in Safe mode on current profile has no effect. I don't want to reset my current profile, so please help me figure out what's wrong in about:config or smth else.

Good day! Another day I noted parallax jquery background effect stop working on https://nplus1.ru site (background photos in the middle on pages like https://nplus1.ru/material/2015/11/06/twin-numbers ). I tried clean new Firefox profile (positive result, everything works as expected); restart in Safe mode on current profile has no effect. I don't want to reset my current profile, so please help me figure out what's wrong in about:config or smth else.

Modified by Reiser

Chosen solution

There was a parameter in about:config that broke site functionality: dom.w3c_touch_events.enabled was set 1 (instead of default 0). The moment I reset it everything starts working as expected.

UPD: It's smarter to set preference to 2 ('auto-detect', as MDN teaches us). Toggling 'simulate touch events' button in 'Responsive design view' mode toggles pref. value between 0 and 1, but never 2.

Read this answer in context 2

Additional System Details

Installed Plug-ins

  • Shockwave Flash 19.0 r0

Application

  • Firefox 43.0b3
  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:43.0) Gecko/20100101 Firefox/43.0
  • Support URL: https://support.mozilla.org/1/firefox/43.0/WINNT/en-US/

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Javascript

  • incrementalGCEnabled: True

Graphics

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  • adapterDescription2:
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  • windowLayerManagerRemote: True
  • windowLayerManagerType: Basic

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
cor-el
  • Top 10 Contributor
  • Moderator
17409 solutions 157269 answers

Did you check this in the Inspector?

If images are missing then check that you do not block images from some domains. You can tap the Alt key or press F10 to show the Menu Bar Check the permissions for the domain in the currently selected tab in "Tools > Page Info > Permissions"

Check "Tools > Page Info > Media" for blocked images

  • Select the first image link and use the cursor Down key to scroll through the list.
  • If an image in the list is grayed and "Block Images from..." has a checkmark then remove this checkmark to unblock images from this domain.

Make sure that you do not block (third-party) images, the permissions.default.image pref on the about:config page should be 1.


There are extensions like Adblock Plus (Firefox menu button/Tools > Add-ons > Extensions) and Anti-Virus software that can block images and other content.

See also:

Did you check this in the Inspector? *https://developer.mozilla.org/Tools/Page_Inspector If images are missing then check that you do not block images from some domains. You can tap the Alt key or press F10 to show the Menu Bar Check the permissions for the domain in the currently selected tab in "Tools > Page Info > Permissions" Check "Tools > Page Info > Media" for blocked images *Select the first image link and use the cursor Down key to scroll through the list. *If an image in the list is grayed and "<i>Block Images from...</i>" has a checkmark then remove this checkmark to unblock images from this domain. Make sure that you do not block (third-party) images, the <b>permissions.default.image</b> pref on the <b>about:config</b> page should be 1. ---- There are extensions like Adblock Plus (Firefox menu button/Tools > Add-ons > Extensions) and Anti-Virus software that can block images and other content. See also: *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes *http://kb.mozillazine.org/Images_or_animations_do_not_load *http://kb.mozillazine.org/Websites_look_wrong
jscher2000
  • Top 10 Contributor
8632 solutions 70604 answers

I assume you cleared the cache to rule out issue with damaged or obsolete script files?

You could temporarily rename prefs.js to prefs_old.js to bypass those settings. If it makes a difference, you'd know it was something in there.

I assume you cleared the cache to rule out issue with damaged or obsolete script files? You could temporarily rename prefs.js to prefs_old.js to bypass those settings. If it makes a difference, you'd know it was ''something'' in there.
cor-el
  • Top 10 Contributor
  • Moderator
17409 solutions 157269 answers

Note that this can also be a problem with exceptions (Site Preferences).

If the above doesn't help then you can try to use "Forget About This Site".

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History > Show All History" or "View > Sidebar > History") or via the about:permissions page.

Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks, cookies, passwords, cache, history, and exceptions, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of the involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.

Note that this can also be a problem with exceptions (Site Preferences). If the above doesn't help then you can try to use "Forget About This Site". You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History > Show All History" or "View > Sidebar > History") or via the about:permissions page. Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks, cookies, passwords, cache, history, and exceptions, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note. You can't recover from this 'forget' unless you have a backup of the involved files. If you revisit a 'forgotten' website then data from that website will be saved once again.

Chosen Solution

There was a parameter in about:config that broke site functionality: dom.w3c_touch_events.enabled was set 1 (instead of default 0). The moment I reset it everything starts working as expected.

UPD: It's smarter to set preference to 2 ('auto-detect', as MDN teaches us). Toggling 'simulate touch events' button in 'Responsive design view' mode toggles pref. value between 0 and 1, but never 2.

There was a parameter in ''about:config'' that broke site functionality: '''dom.w3c_touch_events.enabled''' was set '''1''' (instead of default '''0'''). The moment I reset it everything starts working as expected. ''UPD'': It's smarter to set preference to '''2''' (''''auto-detect'''', as [https://developer.mozilla.org/en-US/docs/Web/API/Touch_events MDN] teaches us). Toggling 'simulate touch events' button in 'Responsive design view' mode toggles pref. value between 0 and 1, but never 2.

Modified by Reiser