The clone()
method of the Request
interface creates a copy of the current Request
object.
clone()
throws a TypeError
if the response Body
has already been used. In fact, the main reason clone()
exists is to allow multiple uses of Body
objects (when they are one-use only.)
If intend to modify the request, you may prefer the Request
constructor.
Syntax
var newRequest = request.clone();
Parameters
None.
Return value
A Request
object, which is an exact copy of the Request
that clone()
was called on.
Example
In the following snippet, we create a new request using the Request.Request()
constructor (for an image file in the same directory as the script), then clone the request.
var myRequest = new Request('flowers.jpg');
var newRequest = myRequest.clone(); // a copy of the request is now stored in newRequest
Specifications
Specification | Status | Comment |
FetchThe definition of 'clone' in that specification. | Living Standard | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Chrome Full support 42 Full support 42 Full support 41 Disabled' From version 41: this feature is behind the |
Edge
Full support 14 |
Firefox Full support 39 Full support 39 Full support 34 Disabled' From version 34: this feature is behind the |
IE
No support No |
Opera Full support 29 Full support 29 Full support 28 Disabled' From version 28: this feature is behind the |
Safari
Full support 10.1 |
WebView Android
No support No |
Chrome Android
No support No |
Firefox Android
No support No |
Opera Android Full support 29 Full support 29 Full support 28 Disabled' From version 28: this feature is behind the |
Safari iOS
Full support 10.3 |
Samsung Internet Android
No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.'
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.'
- User must explicitly enable this feature.
See also
Request.clone() by Mozilla Contributors is licensed under CC-BY-SA 2.5.