int selectionEnd

Source 

@DomName('HTMLTextAreaElement.selectionEnd')
@DocsEditable()
int get selectionEnd =>
    _blink.BlinkHTMLTextAreaElement.instance.selectionEnd_Getter_(this);
void selectionEnd=(int value)

Source 

@DomName('HTMLTextAreaElement.selectionEnd')
@DocsEditable()
set selectionEnd(int value) => _blink.BlinkHTMLTextAreaElement.instance
    .selectionEnd_Setter_(this, value);