XMLHttpRequest

Baseline Widely available *

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 7.

* Some parts of this feature may have varying levels of support.

Invalid slug for templ/sidebar: XMLHttpRequest

XMLHttpRequest (XHR) . XHR URL . .

XMLHttpRequest AJAX .

XML , XMLHttpRequest XML .

, EventSource (Server-sent events) . WebSocket .

XMLHttpRequest.readyState: .
XMLHttpRequest.response: XMLHttpRequest.responseType , ArrayBuffer, Blob, Document, JavaScript , DOMString .
XMLHttpRequest.responseText: string . , null .
XMLHttpRequest.responseType: .
XMLHttpRequest.responseURL: URL . URL null .
XMLHttpRequest.responseXML: Document . , , XML/HTML null . Web Worker .
XMLHttpRequest.status: HTTP .
XMLHttpRequest.statusText: HTTP string . XMLHttpRequest.status , statusText "OK"

: HTTP/1.1 HTTP/2 . (RFC 7540, 8.1.2.4: Response Pseudo-Header Fields)
XMLHttpRequest.timeout: .
XMLHttpRequest.upload: XMLHttpRequestUpload.
XMLHttpRequest.withCredentials: Access-Control true . false .

Specification
XMLHttpRequest # interface-xmlhttprequest

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This page was last modified on 2025 6 27 by MDN contributors.