This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
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.)
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()
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
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 42 41[1] |
39 (39) 34[1] |
No support |
29 |
No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | No support | No support | No support | No support | No support | No support | No support |
[1] This feature is implemented behind a preference.