Adjusting the height of a textarea within a table

Question

Adjusting the height of a textarea within a table

My textarea's height is supposed to be 500%, but it's not changing. I suspect that being inside a table might have something to do with the issue, but I'm unsure of what needs to be adjusted to set the height correctly. Surprisingly, the width of the textarea can be altered within the table.

table,td {
border: 1px solid black;
}
textarea {
resize: none;
width: 100%;
height: 500%;
}

<table> 
<tr>

<td> 
firstTD 
</td> 

<td>
<form method = 'POST' action = 'updateProfile.php'>
<textarea id = 'textarea' placeholder = 'type something here...' onfocus = \"this.placeholder = ''\" onblur = \"this.placeholder = 'type something here...'\" maxlength = '10000'></textarea>
</form>
</td>

</tr> 
</table>

javascript jquery html css

Answer 1

Answer №1

The solution provided by another responder addresses the issue at hand, however, it lacks an explanation. When using % to specify width/height in CSS, you are essentially making it a percentage of the container element's width/height.

For example, if you set your textarea to be 100% of an empty <td>, it will appear small due to the lack of content within the cell.

While setting it to position:absolute may work when no ancestor elements are positioned, a simpler alternative would be to use units other than %. You could try using width:10em; and adjust accordingly until achieving the desired result.

Edit:

In response to a comment question: The reason why using % for height works in this scenario is because the empty cell has a defined height but not width. An empty table cell inherits the height of the row, which is determined by the tallest <td>. If there were additional rows with content in the same column, using % for width would also be feasible.

However, it is generally advised against utilizing % for width and height in tables as changes to the table's content can impact these percentages. Moreover, % does not expand the parent container like px or em do.

Edit once more:

Upon closer examination, I realized there is a form element present. In this case, the percentages specified are relative to the height/width of the form element, not the <td>. It is possible that padding is affecting the dimensions of the cells while the form itself may have no set dimensions.

Answer 2

The solution provided by another responder addresses the issue at hand, however, it lacks an explanation. When using % to specify width/height in CSS, you are essentially making it a percentage of the container element's width/height.

For example, if you set your textarea to be 100% of an empty <td>, it will appear small due to the lack of content within the cell.

While setting it to position:absolute may work when no ancestor elements are positioned, a simpler alternative would be to use units other than %. You could try using width:10em; and adjust accordingly until achieving the desired result.

Edit:

In response to a comment question: The reason why using % for height works in this scenario is because the empty cell has a defined height but not width. An empty table cell inherits the height of the row, which is determined by the tallest <td>. If there were additional rows with content in the same column, using % for width would also be feasible.

However, it is generally advised against utilizing % for width and height in tables as changes to the table's content can impact these percentages. Moreover, % does not expand the parent container like px or em do.

Edit once more:

Upon closer examination, I realized there is a form element present. In this case, the percentages specified are relative to the height/width of the form element, not the <td>. It is possible that padding is affecting the dimensions of the cells while the form itself may have no set dimensions.

Answer 3

Answer №2

Consider adding position: absolute to the textarea and applying position: relative to its parent element. Remove the width property and set left and right values to 0. Keep in mind that this may cause the textarea to overflow outside of its container. Is this the desired outcome?

table,
td {
  border: 1px solid black;
  position: relative;
  width: 350px;
}
textarea {
  resize: none;
  height: 500%;
  left: 0;
  right: 0;
  position: absolute;
  top: 0;
}

<table>
  <tr>
    <td>
      firstTD
    </td>
    <td>
      <form method='POST' action='updateProfile.php'>
        <textarea id='textarea' placeholder='type something here...' onfocus=\ "this.placeholder = ''\" onblur=\ "this.placeholder = 'type something here...'\" maxlength='10000'></textarea>
      </form>
    </td>
  </tr>
</table>

Alternatively, if you require a different layout, consider:

table,
td {
  border: 1px solid black;
  position: relative;
  width: 350px;
}
textarea {
  resize: none;
  height: 10em;
  width: 100%;
  display: block;
  box-sizing: border-box;
}

<table>
  <tr>
    <td>
      firstTD
    </td>
    <td>
      <form method='POST' action='updateProfile.php'>
        <textarea id='textarea' placeholder='type something here...' onfocus=\ "this.placeholder = ''\" onblur=\ "this.placeholder = 'type something here...'\" maxlength='10000'></textarea>
      </form>
    </td>
  </tr>
</table>

Answer 4

Consider adding position: absolute to the textarea and applying position: relative to its parent element. Remove the width property and set left and right values to 0. Keep in mind that this may cause the textarea to overflow outside of its container. Is this the desired outcome?

table,
td {
  border: 1px solid black;
  position: relative;
  width: 350px;
}
textarea {
  resize: none;
  height: 500%;
  left: 0;
  right: 0;
  position: absolute;
  top: 0;
}

<table>
  <tr>
    <td>
      firstTD
    </td>
    <td>
      <form method='POST' action='updateProfile.php'>
        <textarea id='textarea' placeholder='type something here...' onfocus=\ "this.placeholder = ''\" onblur=\ "this.placeholder = 'type something here...'\" maxlength='10000'></textarea>
      </form>
    </td>
  </tr>
</table>

Alternatively, if you require a different layout, consider:

table,
td {
  border: 1px solid black;
  position: relative;
  width: 350px;
}
textarea {
  resize: none;
  height: 10em;
  width: 100%;
  display: block;
  box-sizing: border-box;
}

<table>
  <tr>
    <td>
      firstTD
    </td>
    <td>
      <form method='POST' action='updateProfile.php'>
        <textarea id='textarea' placeholder='type something here...' onfocus=\ "this.placeholder = ''\" onblur=\ "this.placeholder = 'type something here...'\" maxlength='10000'></textarea>
      </form>
    </td>
  </tr>
</table>

Answer 5

Answer №3

This feature allows you to customize the dimensions of a text area

$("textarea").css("height", $("textarea").parent("td").height())
.css("width", $("textarea").parent("td").width())

Answer 6

This feature allows you to customize the dimensions of a text area

$("textarea").css("height", $("textarea").parent("td").height())
.css("width", $("textarea").parent("td").width())

Adjusting the height of a textarea within a table

Answer №1

Answer №2

Answer №3

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