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I can't change charset for viewed web-page

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Previously Firefox have an function and could change charset by custom control. But, now this action is disabled in menu. I need use it for web-developing and testing.

How to activate this function?

Firefox 64.0.2 x64

Previously Firefox have an function and could change charset by custom control. But, now this action is disabled in menu. I need use it for web-developing and testing. '''How to activate this function?''' Firefox 64.0.2 x64
附加的畫面擷圖

由 PyGreen 於 修改

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額外的系統細節

已安裝的外掛程式

  • Shockwave Flash 32.0 r0

應用程式

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

更多資訊

jscher2000
  • Top 10 Contributor
8633 個解決方法 70605 個答案

I think Firefox only enables the menu if the server does not send a character set header and the page also does not contain a meta tag declaring the charset.

I see this is not new: http://forums.mozillazine.org/viewtopic.php?f=38&t=3041063 (off site link)

I think Firefox only enables the menu if the server does not send a character set header and the page also does not contain a meta tag declaring the charset. I see this is not new: http://forums.mozillazine.org/viewtopic.php?f=38&t=3041063 (off site link)
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提出問題者

No, server send headers (it's local server on PC). I looked link, but it can't help.

Can I activate the element menu and change charset forcly with about:config?

No, server send headers (it's local server on PC). I looked link, but it can't help. Can I activate the element menu and change charset forcly with '''about:config'''?

由 PyGreen 於 修改

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jscher2000
  • Top 10 Contributor
8633 個解決方法 70605 個答案

PyGreen said

No, server send headers (it's local server on PC). I looked link, but it can't help.

Yes, if the server sends charset, the menu is disabled. While debugging, can you omit that header?

Can I activate the element menu and change charset forcly with about:config?

When you click View, Firefox sets disabled="true" on the Text Encoding item, so regardless of it's appearance, it doesn't respond to clicks. I don't know of a way using CSS to override the functional aspect.

''PyGreen [[#answer-1230243|said]]'' <blockquote> No, server send headers (it's local server on PC). I looked link, but it can't help. </blockquote> Yes, if the server sends charset, the menu is disabled. While debugging, can you omit that header? <blockquote>Can I activate the element menu and change charset forcly with '''about:config'''? </blockquote> When you click View, Firefox sets '''disabled="true"''' on the Text Encoding item, so regardless of it's appearance, it doesn't respond to clicks. I don't know of a way using CSS to override the functional aspect.
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提出問題者

But this behavior doesn't work for some sites, eg: on at screenshot..

But this behavior doesn't work for some sites, eg: on at screenshot..
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jscher2000
  • Top 10 Contributor
8633 個解決方法 70605 個答案

PyGreen said

But this behavior doesn't work for some sites, eg: on at screenshot..

If the server and page do not set the charset, and the browser falls back to the default, then the Text Encoding menu is enabled. For example: https://www.jeffersonscher.com/res/quirks.html

''PyGreen [[#answer-1230570|said]]'' <blockquote> But this behavior doesn't work for some sites, eg: on at screenshot.. </blockquote> If the server and page do not set the charset, and the browser falls back to the default, then the Text Encoding menu is enabled. For example: https://www.jeffersonscher.com/res/quirks.html
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cor-el
  • Top 10 Contributor
  • Moderator
17411 個解決方法 157274 個答案

I found a tricky way to enable the Text Encoding menu. This involves using the Browser Toolbox to keep pop-up menus open or use about:config (ui.popup.disable_autohide = true) and the Browser Console.

You can run this code in the Browser Toolbox or the Browser Console with either the View menu open or the encoding list visible via "3-bar menu -> More -> Text Encoding".

/* View -> Text Encoding */
window.document.getElementById("charsetMenu").removeAttribute("disabled");
/* app-menu -> More -> Text Encoding */
elm = window.document.getElementById("PanelUI-characterEncodingView");
elm = elm.getElementsByClassName("subviewbutton");
for(E in elm){try{elm[E].removeAttribute("disabled")}catch(e){}}
I found a tricky way to enable the Text Encoding menu. This involves using the Browser Toolbox to keep pop-up menus open or use about:config (ui.popup.disable_autohide = true) and the Browser Console. You can run this code in the Browser Toolbox or the Browser Console with either the View menu open or the encoding list visible via "3-bar menu -> More -> Text Encoding". <pre><nowiki>/* View -> Text Encoding */ window.document.getElementById("charsetMenu").removeAttribute("disabled"); /* app-menu -> More -> Text Encoding */ elm = window.document.getElementById("PanelUI-characterEncodingView"); elm = elm.getElementsByClassName("subviewbutton"); for(E in elm){try{elm[E].removeAttribute("disabled")}catch(e){}}</nowiki></pre>
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