HTTP是一个client-server协议:请求通过一个实体被发出,实体也就是用户代理。大多数情况下,这个用户代理都是指浏览器,当然它也可能是任何东西,比如一个爬取网页来生成和维护搜索引擎索引的机器。 每一个发送到服务器的请求,都会被服务器处理并且返回一个消息,也就是response。在client与server之间,还有许许多多的被称...
Learn about the XMLHttpRequest interface, including its constructor, properties, and methods, specifications and browser compatibility.
HTTP headers let the client and the server pass additional information with a message in a request or response. In HTTP/1.X, a header is a case-insensitive name followed by a colon, then optional whitespace which will be ignored, and finally by its value
HTTP status code pages imply the optional reason phrase is a required part of the status code #37057 commented on Feb 3, 2025 • 0 new comments “Using HTTP cookies” needs a note on how to delete/unset a cookie #25324 commented on Feb 3, 2025 • 0 new comments SVG examples...
status: The status code for the reponse, e.g.,200. statusText: The status message associated with the staus code, e.g.,OK. headers: Any headers you want to add to your response, contained within aHeadersobject or object literal ofByteStringkey/value pairs (seeHTTP headersfor a reference...
HTTP response status codes Again, the syntax for HTTP response status codes is really simple — a syntax block including the code and name. For example: 404 Not Found SVG reference syntax SVG elements SVG element syntax sections are non-existent — just like HTML element syntax sections. Each...
http Data forHTTPfeatures, including: headers- Request and response headers methods- Request methods status- Status codes javascript Data for JavaScript language features, including: builtins- Built-in objects classes- Class definition features
/ja/docs/Web/HTTP/Response_codes/204 /ja/docs/Web/HTTP/Status/204 /ja/docs/Web/HTTP/Server-Side_Access_Control /ja/docs/Web/HTTP/CORS /ja/docs/Web/HTTP/X-Frame-Options /ja/docs/Web/HTTP/Headers/X-Frame-Options /ja/docs/Web/Houdini /ja/docs/Web/API/Houdini /ja/docs/Web/Houdini ...
How to document an HTTP header The MDNHTTP header referencedocuments HTTP header fields are components of the header section of request and response messages in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction. This page explains how to create a ...
value The value to set as the body of the header. Return value None (undefined). Specification XMLHttpRequest #the-setrequestheader()-method Report problems with this compatibility data on GitHub desktopmobile Chrome Edge Firefox Opera Safari ...