XMLHttpRequest.overrideMimeType()

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The XMLHttpRequest method overrideMimeType() specifies a MIME type other than the one provided by the server to be used instead when interpreting the data being transferred in a request. This may be used, for example, to force a stream to be treated and parsed as "text/xml", even if the server does not report it as such. This method must be called before calling send().

Syntax

XMLHttpRequest.overrideMimeType(mimeType)

Parameters

mimeType
A DOMString specifying the MIME type to use instead of the one specified by the server. If the server doesn't specify a type, XMLHttpRequest assumes "text/xml".

Return value

undefined.

Example

This example specifies a MIME type of "text/plain", overriding the server's stated type for the data being received.

Note: If the server doesn't provide a Content-Type header, XMLHttpRequest assumes that the MIME type is "text/xml". If the content isn't valid XML, an "XML Parsing Error: not well-formed" error occurs. You can avoid this by calling overrideMimeType() to specify a different type.

// Interpret the received data as plain text

req = new XMLHttpRequest();
req.overrideMimeType("text/plain");
req.addEventListener("load", callback, false);
req.open("get", url);
req.send();

Specifications

Specification Status Comment
XMLHttpRequest
The definition of 'overrideMimeType()' in that specification.
Living Standard WHATWG living standard

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support112 Yes

11

51

Yes1.2
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes1 Yes Yes Yes Yes Yes

1. Implemented via ActiveXObject

See also

Document Tags and Contributors

Contributors to this page: Sheppy, ExE-Boss, Makyen, erikadoyle, buzzdecafe, cong, jsx, MashKao
Last updated by: Sheppy,