Controlling when a footnote appears in beamer presentation

Question

In my beamer presentation, I have multiple slides of the form

  frame{
  frametitle{FRAME TITLE HERE}
  begin{itemize}
  begin{columns}
  begin{column}{2in}
  item onslide<1->
  TEXT FOR ITEM 1 HERE WITH REFERENCE TO A FOOTNOTE USING footnotemark
  item onslide<2-> 
  TEXT FOR ITEM 2 HERE WITH REFERENCE TO A FOOTNOTE USING footnotemark
  end{column}

  begin{column}{1.6in}
  onslide<1->
  ADD FIGURE 1 HERE
  onslide<2->
  ADD FIGURE 2 HERE
  end{column}
  end{columns}

  footnotetext[1]{TEXT FOR FIRST FOOTNOTE HERE}
  footnotetext[2]{TEXT FOR SECOND FOOTNOTE HERE}
  end{itemize}
  }

However, when I do this, both footnotes appear on slide 1, even though the footnotemark for the second footnote appears in the main text on slide 2. Ideally, I would like the second footnote to appear only when the second slide comes up. Any suggestions?

beamer footnotes

samcarter_is_at_topanswers.xyz · Answer

In order to remove this question from the list of unanswered questions, here the comments turned into an answer.

documentclass{beamer}

begin{document}

  begin{frame}
    frametitle{FRAME TITLE HERE}
    begin{itemize}
            item onslide<1-> TEXT FOR ITEM 1 HERE WITH REFERENCE TO A FOOTNOTE USING footnotemark
            item onslide<2-> TEXT FOR ITEM 2 HERE WITH REFERENCE TO A FOOTNOTE USING footnotemark
        item onslide<3-> TEXT FOR ITEM 3 HERE
        footnotetext[1]{TEXT FOR FIRST FOOTNOTE HERE}
        only<2->{footnotetext[2]{TEXT FOR SECOND FOOTNOTE HERE}}
    end{itemize}
  end{frame}

end{document}

enter image description here

If you want the footnote box to keep its size, not increasing every slide, use the following instead:

footnotetext[2]<2->{TEXT FOR SECOND FOOTNOTE HERE}

Controlling when a footnote appears in beamer presentation

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