I want to know the height of one row of textarea. I want to know that because I want to do some calculations. Do we know it or do we have to do some scripting?
The height of a row is set by line-height
.
For example:
<textarea rows="1">hello world</textarea>
If you set the following:
textarea { line-height: 1; font-size: 12px; border: none; margin: 0; padding: 0; }
By inspecting the textarea element you'll find out that it has a height of 12px.