Imagine you've got a form on a page, and you POST that form's data to the server in an AJAXian way, e.g. jQuery.post(). The server judges that the data is invalid because, say, the email address doesn't contain an '@' symbol.Imagine you've got a form on a page, and you PO
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是否可以在非http -200响应中返回HTML标记?
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