SO - 25540865

by bvotcode

HTML

<select id="select1">
    <option></option>
    <option>AAA</option>
    <option>BBB</option>
    <option>CCC</option>
    <option>DDD</option>
    <option>EEE</option>
</select>
<textarea style="height:150px;width:150px" id="t1"></textarea>
<textarea style="height:150px;width:150px" id="t2"></textarea>
<script>
$("#select1").change(function () {
    $("#t1").val("XY "+$(this).find(':selected').text()+ "AB");
});

$("#select1").change(function () {
    $("#t2").val($(this).val());
});
</script>