javascript - Create unique id per iteration, then specify behavior when clicked -

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i have html.erb file i'm creating new row iterate on collection. need able dynamically create id per row, , able specify id in .js file can show/hide of contents when clicked. 

#foo.html.erb file <table>   <thead>     <tr>       <th> group name </th>       <th>&nbsp;&nbsp;</th>       <th> count </th>     </tr>   </thead>   <tbody>     <% @groups.each |group_name, count_for_group| %>        <tr id="unique_id"> #create unique id here         <td> <%= group_name %> </td>         <td> </td>         <td> <%= count_for_group %> </td> #this should hidden. if row data belongs clicked, show it. if clicked again, hide it.       </tr>     <% end %>   </tbody> </table>

and need able show/hide group's count when clicked, don't know how find id dynamically created:

#app/assets/javascripts/test.js $(document).ready(function(){    $("#dynamic_group_id").on(“click”, function(e){ #somehow able specify dynamically created id     #show/hide contents   }); });

you abusing element ids. use ids unique identifiers.

for else there other selectors - commonly used classes.

$(".group").on('click', function() {    $(this).find('.hide-me').toggle();  });    console.log($(".group"));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <table>    <thead>      <tr>        <th>group name</th>        <th>&nbsp;&nbsp;</th>        <th>count</th>      </tr>    </thead>    <tbody>      <tr class="group">        <td>the beatles</td>        <td></td>        <td class="hide-me">4</td>      </tr>      <tr class="group">        <td>the rolling stones</td>        <td></td>        <td class="hide-me">4</td>      </tr>    </tbody>  </table>


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