如果页面已经是 UTF-8，那么将 accept-charset="UTF-8" 添加到 HTML 表单有什么好处吗？
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Is there any benefit to adding accept-charset="UTF-8" to HTML forms, if the page is already in UTF-8?
提问by philfreo
For pages already specified (either by HTTP header, or by meta tag), to have a Content-Type with a UTF-8 charset... is there a benefit of adding accept-charset="UTF-8"to HTML forms?
对于已经指定的页面（通过 HTTP 标头或元标记），具有带有 UTF-8 字符集的内容类型......添加accept-charset="UTF-8"到 HTML 表单是否有好处？
(I understand the accept-charsetattribute is broken in IE for ISO-8859-1, but I haven't heard of a problem with IE and UTF-8. I'm just asking if there's a benefit to adding it with UTF-8, to help prevent invalid byte sequences from being entered.)
（我知道accept-charsetISO-8859-1的属性在 IE 中被破坏，但我没有听说 IE 和 UTF-8 有问题。我只是问用 UTF-8 添加它是否有好处，以有助于防止输入无效的字节序列。）
采纳答案by bobince
If the page is already interpreted by the browser as being UTF-8, setting accept-charset="utf-8"does nothing.
如果该页面已被浏览器解释为 UTF-8，则设置accept-charset="utf-8"不会执行任何操作。
If you set the encoding of the page to UTF-8 in a <meta>and/or HTTP header, it will be interpreted as UTF-8, unlessthe user deliberately goes to the View->Encoding menu and selects a different encoding, overriding the one you specified.
如果您在一个<meta>和/或 HTTP 标头中将页面的编码设置为 UTF-8 ，它将被解释为 UTF-8，除非用户故意转到 View->Encoding 菜单并选择不同的编码，覆盖那个编码你指定的。
In that case, accept-encodingwould have the effect of setting the submission encoding back to UTF-8 in the face of the user messing about with the page encoding. However, this still won't work in IE, due the previous problems discussed with accept-encodingin that browser.
在这种情况下，accept-encoding当用户处理页面编码时，会将提交编码设置回 UTF-8。但是，由于之前accept-encoding在该浏览器中讨论过的问题，这在 IE 中仍然不起作用。
So it's IMO doubtful whether it's worth including accept-charsetto fix the case where a non-IE user has deliberately sabotaged the page encoding (possibly messing up more on your page than just the form).
因此，IMO 怀疑是否值得accept-charset修复非 IE 用户故意破坏页面编码的情况（可能在您的页面上搞砸的不仅仅是表单）。
Personally, I don't bother.
就我个人而言，我不打扰。
回答by jwueller
I did not encounter any problems using UTF-8 with IE (6+) or any other major browser out there. You need to make sure, that a UTF-8 meta tag is set (IE needs this) and that all your files are UTF-8 encoded (which means that the webserver sends UTF-8 headers). Then there should not be any problem if you omit accept-charset.
我在 IE (6+) 或任何其他主要浏览器中使用 UTF-8 时没有遇到任何问题。您需要确保设置了 UTF-8 元标记（IE 需要这个）并且您的所有文件都是 UTF-8 编码的（这意味着网络服务器发送 UTF-8 标头）。那么如果省略accept-charset.
