<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <script> function sample(){ maxp=0; for(x1=1;x1<100;x1++){ x2=100-x1; mx=x1; if(x2>mx)mx=x2; nx=100-mx; if(nx>maxp)maxp=nx; } $("#memo").html(maxp); } </script>