I have two dropdown boxes in a single form. How can I alert the values of both the dropdown boxes with onchange function on the second dropdown box without submitting the form.

<select name="abc1" id="abc1">
 <option value="a">A</option>
 <option value="B">B</option>
 <option value="c">C</option>
</select>

<select name="abc2" id="abc2" onchange="getvalue()">
 <option value="a">d</option>
 <option value="e">E</option>
 <option value="f">F</option>
</select>