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https://developer.mozilla.org › en-US › docs › Web › HTTP › Headers

HTTP headers - HTTP | MDN - MDN Web Docs

HTTP headers let the client and the server pass additional information with an HTTP request or response. An HTTP header consists of its case-insensitive name followed by a colon (:), then by its value. Whitespace before the value is ignored.

https://developer.mozilla.org › fr › docs › Web › HTTP › Headers

En-têtes HTTP - HTTP | MDN - MDN Web Docs

Les en-têtes de métadonnées pour les requêtes de récupération (fetch metadata request header) fournissent des informations à propos du contexte d'origine de la requête. Un serveur pourra les utiliser pour déterminer si une requête est autorisée, selon sa provenance et comment la ressource sera utilisée.

https://developer.mozilla.org › en-US › docs › Glossary › Request_header

Request header - MDN Web Docs Glossary: Definitions of Web-related ...

A request header is an HTTP header that can be used in an HTTP request to provide information about the request context, so that the server can tailor the response. For example, the Accept-* headers indicate the allowed and preferred formats of the response.

https://en.wikipedia.org › wiki › List_of_HTTP_header_fields

List of HTTP header fields - Wikipedia

HTTP header fields are a list of strings sent and received by both the client program and server on every HTTP request and response. These headers are usually invisible to the end-user and are only processed or logged by the server and client applications.

https://devdoc.net › web › developer.mozilla.org › en-US › docs › HTTP › Headers.html

HTTP headers - HTTP | MDN - devdoc.net

Request header: Headers containing more information about the resource to be fetched or about the client itself. Response header: Headers with additional information about the response, like its location or about the server itself (name and version etc.).

http://devdoc.net › web › developer.mozilla.org › en-US › docs › Web › API › XMLHttpRequest › setRequestHeader.html

XMLHttpRequest.setRequestHeader () - Web APIs | MDN

The XMLHttpRequest.setRequestHeader() method sets the value of an HTTP request header. You must call setRequestHeader() after open(), but before send(). If this method is called several times with the same header, the values are merged into one single request header.

https://devdoc.net › web › developer.mozilla.org › en-US › docs › Web › API › Request › headers.html

Request.headers - Web APIs | MDN - devdoc.net

The headers read-only property of the Request interface contains the Headers object associated with the request. Syntax. var myHeaders = request .headers; Value. A Headers object. Example.

https://stackoverflow.com › questions › 220231

Accessing the web page's HTTP Headers in JavaScript

Use the following JavaScript code to get all the HTTP headers by performing a get request: var req = new XMLHttpRequest(); req.open('GET', document.location, true); req.send(null); req.onload = function() {

Accessing the web page's HTTP Headers in JavaScript

https://developer.mozilla.org › en-US › docs › Web › API › Request › headers

Request: headers property - Web APIs | MDN - MDN Web Docs

Learn about the Request.headers property, including its type, code examples, specifications, and browser compatibility.

https://nodejs.org › api › http.html

HTTP | Node.js v22.9.0 Documentation

Flushes the request headers. For efficiency reasons, Node.js normally buffers the request headers until request.end() is called or the first chunk of request data is written. It then tries to pack the request headers and data into a single TCP packet.