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
constructor (for an image file in the same directory as the script), then clone the request.Request.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 |
---|---|---|
Fetch The 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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
clone | Chrome
Full support
42
| Edge Full support 14 | Firefox
Full support
39
| IE No support No | Opera
Full support
29
| Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android
Full support
29
| Safari iOS No support No | 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.