怎么ajax在html头部添加meta信息

[SuperXxxccss]

并且有content内容

[潇湘忆梦]

参考设置：https://www.cnblogs.com/cdwp8/p/5157377.html

[A小铁]

W3C标准文档，标准里面明确规定了以下请求头信息是浏览器控制，开发者不允许设置这些请求头 Terminate these steps if header is a case-insensitive match for one of the following headers: Accept-Charset Accept-Encoding Access-Control-Request-Headers Access-Control-Request-Method Connection Content-Length Cookie Cookie2 Date DNT Expect Host Keep-Alive Origin Referer TE Trailer Transfer-Encoding Upgrade User-Agent Via