Function downloadSvgElement

downloadSvgElement(element?: null | HTMLElement, fileName?: string): void
Popup a download dialog by creating a fake download link, as svg format
Parameters
- Optionalelement: null | HTMLElement
  The element to download
- OptionalfileName: string
  The default file name to save, when popup the download dialog
Returns void
See
"https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/toDataURL"