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Editorial Team
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Asked: 2026-05-26T22:11:11+00:00

I am trying to show/hide (via a toggle mechanism) only certain rows in my

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I am trying to show/hide (via a toggle mechanism) only certain rows in my table. I have gotten somewhat close, code is below. What I was reading about in other questions regarding this is the use of style id’s and I have tried that but it fails for me. So that is why I used ‘hide=yes’ and pass that into the toggle function.

This is going to be a table with a couple of hundred entries that when I click toggle can be reduce down to less than 30 on any given day.

Is there a better way to do this?

<html>
   <head>
   <script>
        function toggle(thisname) {

           tr=document.getElementsByTagName('tr')

           for (i=0;i<tr.length;i++){
              if (tr[i].getAttribute(thisname)){
                 if ( tr[i].style.display=='none' ){
                    tr[i].style.display = '';
                 }
              else {
                 tr[i].style.display = 'none';
                 }
              }
           }
        }
   </script>
   </head>

<body>

<span onClick="toggle('hide');">TOGGLE</span><br /><br />

<table>
   <tr ><td >display this row 1</td></tr>
   <tr hide=yes ><td>hide this row 1</td></tr>
   <tr><td>display this row 2</td></tr>
   <tr hide=yes ><td>hide this row 2</td></tr>
   <tr hide=yes ><td>hide this row 3</td></tr>
   <tr><td>display this row 3</td></tr>
   <tr><td>display this row 4</td></tr>
   <tr><td>display this row 5</td></tr>
   <tr><td>display this row 6</td></tr>
   <tr hide=yes ><td>hide this row 4</td></tr>
   <tr hide=yes ><td>hide this row 5</td></tr>
   <tr><td>display this row 7</td></tr>
   <tr hide=yes ><td>hide this row 6</td></tr>
   <tr hide=yes ><td>hide this row 7</td></tr>
</table>


</body>
</html>
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1 Answer

  1. Editorial Team

    Your approach seems ok, i suggest you declare variables tr and i

    alternately you could use class instead

     <span onclick="toggle('yes');">

 if (tr[i].className == thisname){

 <tr class=yes>
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