Is there a way to make a TABLE expand to match the height of its surrounding element? (or, tackling sluggishness in IE with JavaScript)

I am facing a challenge with a web page where I have a table nested inside of a TD tag. Despite the unconventional approach, I need to ensure that the height of the nested table matches the height of the TD cell containing it upon page load. Currently, I achieve this using the following code:

$(document).ready(function()
{
    $('.TakeOffItemGroupTable').each(function()
    {
        $(this).height($(this).closest('td').height()); 
    });
}

Although this method works, resizing multiple tables on the page can significantly slow down performance in IE8 (compared to Chrome and Firefox). This is because

$(this).height($(this).closest('td').height());
takes:

  • 1ms in Chrome
  • 18ms in Firefox
  • 330ms in IE8

Therefore, I am seeking an alternative approach to automatically adjust the nested table’s height based on its container's height.

Some methods I have attempted include:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>Untitled</title>
</head>
<body>
  <table border="1" >
    <tr>
       <td width="100px">JKLSD FASJDFKLSA DFKLADFJL KASDJFKLSAD JFSAKLDF</td>
       <td style="height: 100%;">
           <table style="height:100%;" border="1">
            <tr>
              <td>
                    I should be 100% tall!
              </td>
            </tr>
           </table>
       </td>
    </tr>
  </table>
</body>
</html>

While this solution works in Firefox, it does not render properly in IE.

Answer №1

If you include a proper HTML Doctype, the second example should function in Internet Explorer without needing any Javascript.

This code snippet has been tested and proven to work in Firefox, as well as in Internet Explorer versions 6, 7, and 8:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
  <table style="height: 100%" border="1" >
    <tr><td>
       <table style="height:100%" border="1">
        <tr>
          <td>
                I am 100% tall!
          </td>
        </tr>
       </table>
    </td></tr>
  </table>
</body>
</html>

Answer №2

To make it function properly, assign a specific pixel height to the outer td. It seems that currently, the td is already occupying 100% of its containing element's height.

Answer №3

Is there a reason why you are unable to set the table height to 100% directly in the HTML code? It should ideally function without the need for any JavaScript.

<td height="100%">
  <table height="100%">
  ...
  </table>
</td>

Answer №4

While jquery is popular, sometimes simpler JavaScript can do the trick.

      let table = document.getElementById("nestedTable");
      table.style.height = table.parentNode.offsetHeight.toString() + "px";

Make sure to account for any border, padding, or margin adjustments that may be necessary.

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