Multi tool use

Clash Royale CLAN TAG#URR8PPP

I have 4 dropdown and I want to hide them when page loads and then whenever add button is clicked then one dropdown should appear

`

<p class="hide_editor" id="show_editor1">
<label for="subject_primary">Co-Editor 1:</label>
<select name='F_co_author1' id="co_author1" onchange="LoadExperts();">
<option value=''>No Coauthor 1</option>
</select>
</p>

<p class="hide_editor" id="show_editor2">
<label for="subject_primary">Co-Editor 2:</label>
<select name='F_co_author2' id="co_author2" onchange="LoadExperts();">
<option value=''>No Coauthor 2</option>
</select>
</p>

<p class="hide_editor" id="show_editor3">
<label for="subject_primary">Co-Editor 3:</label>
<select name='F_co_author3' id="co_author3" onchange="LoadExperts();">
<option value=''>No Coauthor 3</option>
</select>
</p>

<p class="hide_editor" id="show_editor4">
<label for="subject_primary">Co-Editor 4:</label>
<select name='F_co_author4' id="co_author4" onchange="LoadExperts();">
<option value=''>No Coauthor 3</option>
</select>
</p>



<button id='show_add_button' type="button" class="btn btn-success" style="display: block;">Add Co-Editor</button>

<script type="text/javascript" language="javascript"> // for loading the co-editors

//hide co-editors
$(".hide_editor").hide();

//show co-editor
$("#show_add_button").on("click", function ()
//$('#show_editor1').show();

// $('#show_editor2').show();
);
</script>`


here are four dropdown which is hidden when page loads but now when i click on add button then it should show only first dropdown...again i click on add button then second drpdown sould appear

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