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.
Summary
The URL.revokeObjectURL() static method releases an existing object URL which was previously created by calling URL.createObjectURL(). Call this method when you've finished using an object URL to let the browser know not to keep the reference to the file any longer.
You can call revokeObjectURL() any time after sourceopen is handled. This is because createObjectURL() is merely a means of connecting a media element's src attribute with a MediaSource instance. Calling revokeObjectURL() leaves the underlying objects in place and allows the platform to handle garbage collection at an appropriate time.
Syntax
window.URL.revokeObjectURL(objectURL);
- objectURL
- is a
DOMStringrepresenting the object URL that was created by callingURL.createObjectURL().
Example
See Using object URLs to display images.
Specification
| Specification | Status | Comment |
|---|---|---|
| File API The definition of 'URL' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 8.0[1] | (Yes) | 4.0 (2.0) | 10.0 | 15.0 | 6.0[1] 7.0 |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes)[1] | (Yes) | 14.0 (14.0) | (Yes) | 15.0 | 6.0[1] 7.0 |
[1] Implemented with URL prefixed as webkitURL.