<script type="text/javascript">

? function? app2(x,y)

? { var sum,x,y;

? ? sum = x * y;

? ? return sum;

? }

?var req1 = app2(5,6);

?var req2 = app2(2,3);

?var sumq = req1+req2;

document.write("req1的值:"+req1+"<br/>");

document.write("req2的值:"+req2+"<br/>");

document.write(req1+"與"+req2+"和:"+sumq);

</script>