<script language="javascript">
var aNum=Number(4);
document.write(aNum.toString());
document.write("<br>");
</script>

<script language="javascript">
var aNum=Math.round(5.5).toString();
document.write(aNum);
document.write("<br>");
</script>
 

<script language="javascript">
var vs=new String("Hello");
document.write(vs.toString());
</script>

<script language="javascript">
function doit(){
document.write("Hello");
}
var newString=doit.toString();
document.write(newString);
</script>