<input type=text value="ABCDE" id=bao>
<input type=button value=get onclick="get()">
<script>
function get()
{
bao.focus();
var rng = document.selection.createRange().text
alert(rng);
}
</script>
<input type=button value=get onclick="get()">
<script>
function get()
{
bao.focus();
var rng = document.selection.createRange().text
alert(rng);
}
</script>
try to select "ABC":<INPUT TYPE="text" id="txt" onselect="if (document.selection.createRange().text == 'ABC') alert('You select \'ABC\'')" value="abABCDsfADFBABCdDF">