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Editorial Team
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Asked: 2026-05-23T09:24:24+00:00

jQuery(#X).css(z-index); always returns auto on Webkit browsers. Works ok on Firefox. It also appears

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jQuery("#X").css("z-index"); always returns “auto” on Webkit browsers. Works ok on Firefox.

It also appears that you can’t set the z-index with something like: jQuery("#X").css("z-index",5);

Test case follows: 

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>jQuery CSS Z-index Fail</title>
    <script src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
    <script type="text/javascript">
      $(document).ready(function(){
        $("#X").css("z-index",5);       
        $("#Y").append($("#X").css("z-index"));
      });
    </script>
    <style type="text/css">
      h1 {z-index: 3;}
    </style>
  </head>
  <body>
     <h1 id="X">Some Text</h1>
     <div id="Y"> Z-index is: </div>
  </body>
</html>
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1 Answer

  1. Editorial Team

    You NEED to specify position to use z-index.

    <h1 id="X" style='position:relative;'>Some Text</h1>

    fixes it immediately in Chrome.

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