How to lowercase of input field in onkeyup event?

Script Method:
<input type="text" id="ele" onkeyup="this.value=this.value.toLowerCase()" >
CSS Method:
Add style "text-transform:uppercase"
<input type="text" id="ele" style='text-transform:lowercase' >

How to uppercase of input field in onkeyup event?

Script Method:
<input type="text" id="ele" onkeyup="this.value=this.value.toUpperCase()" >
CSS Method:
Add style "text-transform:uppercase"
<input type="text" id="ele" style='text-transform:uppercase' >

How to get the number of rows in a table - tbodyin jquery?

<table id="myTable" cellpadding="0" cellspacing="0">
  <thead>
    <tr>
      <th>First Name</th>
      <th>Last Name</th>
      <th>Birth Date</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>John</td>
      <td>Smith</td>
      <td>03-11-1980</td>
    </tr>
  </tbody>
</table>

Solution:
$("#myTable tbody tr").length - Its wrong.
$("#myTable > tbody > tr").length; - Its right to get solution.