readAsDataURL() method of the
FileReaderSync interface allows to read
Blob objects in a synchronous way into an
DOMString representing a data URL. This interface is only available in workers as it enables synchronous I/O that could potentially block.
DOMString representing the input data as a data URL.
The following exceptions can be raised by this method:
is raised when one of the following problematic situation is detected:
- the resource has been modified by a third party;
- too many read are performed simultaneously;
- the file pointed by the resource is unsafe for a use from the Web (like it is a system file).
is raised when the resource cannot be read due to a permission problem, like a concurrent lock.
is raised when the resource is a data URL and exceed the limit length defined by each browser.
|File API |
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