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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
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
overrideMimeType | Chrome Full support 1 | Edge Full support 12 | Firefox Full support Yes | IE
Full support
11
| Opera Full support Yes | Safari Full support 1.2 | WebView Android Full support Yes | Chrome Android Full support 18 | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
- See implementation notes.
- See implementation notes.