dom - Target is null error in browser dev tools -


i trying insert newly created elements (rows , cells) table (via javascript) above row has id of "dynpop". when attempt this, following error

typeerror: target null

here html of table...

<table>   <tr id="dynpop">     <td  style="color:white">       blah blah blah blah blah     </td>   </tr> </table>

and here code insert new row , cell before it...

$rownumber = 1; var target = document.getelementbyid('dynpop'); //populate member table chapter image row  var $chap_image = $out[1]; var olr1 = document.createelement('tr'); var old1 = document.createelement('td'); var olt1 = document.createtextnode($chap_image); old1.appendchild(olt1); olr1.appendchild(old1); $rowname = 'row' + $rownumber; olr1.setattribute('name', $rowname); target.insertbefore(olr1, target); $rownumber++;

any thoughts why javascript code not working ?

thanks!

i"m not sure without seeing rest of html, think main problem javascript executing before dom loads.

you might try putting javascript function gets called on body element's onload event:

<!doctype html> <html> <head>     <title>asdf</title>  <script type="text/javascript">     function dothing() {         $rownumber = 1;     var target = document.getelementbyid('dynpop');          var $chap_image = "$out[1]; ";         var olr1 = document.createelement('tr');         var old1 = document.createelement('td');          var olt1 = document.createtextnode($chap_image);          old1.appendchild(olt1);          olr1.appendchild(old1);           $rowname = 'row' + $rownumber;         olr1.setattribute('name',$rowname);         target.insertbefore(target, olr1);         $rownumber++;      } </script> </head> <body onload="dothing()">    <table>      <tr id="dynpop">       <td  style="color:white">     blah blah blah blah blah       </td>     </tr>   </table>  </body> </html>

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