Function readAsDataUrl

readAsDataUrl(
    file?: File,
    resolve?: (res?: string) => void,
    reject?: (ev?: ProgressEvent<FileReader>) => void,
): void
Read and convert the given file to data url
Parameters
- Optionalfile: File
  The file to inspect
- Optionalresolve: (res?: string) => void
  The callback function to execute when the file read success
- Optionalreject: (ev?: ProgressEvent<FileReader>) => void
  The callback function to execute when the file read failure
Returns void

Author
David Hsing