<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD> <TITLE> New Document </TITLE> </HEAD>
<script>
var x=3;
function ff(n){
r.value = t.value.indexOf('18');
}
</script>
<BODY>
<input id=t value="aaaa18aaaa"><br>
<input id=b type=button value="클릭" onclick="ff('t')"><br>
<input id=r value=""><br>
</BODY>
</HTML>
<HTML>
<HEAD> <TITLE> New Document </TITLE> </HEAD>
<script>
var x=3;
function ff(n){
r.value = t.value.indexOf('18');
}
</script>
<BODY>
<input id=t value="aaaa18aaaa"><br>
<input id=b type=button value="클릭" onclick="ff('t')"><br>
<input id=r value=""><br>
</BODY>
</HTML>
